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1 第 1 页共 16 页 2016/9/2 23:49 计算题来自 Moodle 中文教程首页管理 Moodle 课程题目计算题 Calculated questions offer a way to create individual numerical questions by the use of wildcards (i.e you can use common variables names as x, y enclosed in curly braces to create the wildcards {x} and {y}) that are substituted with random values when the quiz is taken. 计算问题提供了一种通过使用通配符创建单独的数值问题 ( 如可以使用普通变量名为 X,Y, 用大括号创建通配符 {X} 和 { Y }), 当进行测验时, 随机值取代通配符 For example, if you want to create a large number of "Calculatetheareaofarectangle" problems to drill your students, you could create a question with two wildcards (i.e. {base}, {height} created from the common base, height variable names) and put in the "Correct AnswerFormula=" input field {base} * {height} ( * being the multiplication sign ). 例如, 如果你想创建大量的计算一个矩形的面积的问题训练你的学生, 你可以用两个通配符 ( 如 { 长 },{ 宽 } 作为共同的长和宽的变量名 ) 创建一个问题, 放在正确的答案公式 =" 输入值 { 长 } * { 宽 } ( * 是乘号 ) Correct Answer Formula= {base}*{height} When a student takes the test, Moodle will randomly select values for {base} and {height} and grade the response using the result of the CorrectAnswerFormula. 当一个学生测试时,Moodle 将随机地选择 { 长 } 和 { 宽 } 的值, 并用正确答案公式计算结果评估答案 The test will very rarely appear the same way twice. 测试很少出现相同的情况题目管理题目题目行为题目类型计算题计算题简化版计算题多选项版描述题简答题匹配题内嵌答案 ( 完形填空 ) 多项选择题随机填空匹配题填空题数字题是非判断题第三方题目类型题目常见问题解答目录 1 Is this really the question type for you? 2 Simple calculated question type 3 Wildcards and datasets

2 第 2 页共 16 页 2016/9/2 23:49 4 Question set-up 4.1 Page 1. Editing a Calculated question 4.2 第一页. 编辑计算的问题 Penalty factor 4.3 Tolerance 4.4 Page 2. Choose dataset properties 4.5 Page 3. Edit the datasets 4.6 Page 3. 编辑数据集 Adding/deleting your own values 添加 / 删除你的值 Letting Moodle create values 让 Moodle 自动生成值 : Finishing off 结束工作 : What does the 'Update the datasets parameters' button do? 更新数据集按钮是做什么的? 5 Correct answer formula syntax 5.1 DO NOT PUT THE = sign in the formula. 5.2 不要放在这里 = 公式中的符号. 6 变量函数 7 Predefined constants 8 Synchronization 9 See also Isthisreallythequestiontypeforyou? The main purpose of the calculated question is to create multiple versions of a question with different numerical values. This means you must have atleastone wildcard in one of the answers. If you don't need a random element, use the Numerical question type instead. 这是你要选择的题目类型吗?

3 第 3 页共 16 页 2016/9/2 23:49 计算题的主要目的是创建多个不同数值的版本这就代表着你必须至少有一个通配符答案如果你不需要随机的, 那使用数值类型代替 Simplecalculatedquestiontype The simple calculated question offers the most used features of the calculated question with a much simpler creation interface. 简单计算题类型简单计算题能提供许多简单的创建接口计算题的最常用特征 Wildcardsanddatasets When Moodle delivers a Calculated question to the student, the wildcards are replaced with randomly-selected values. However, these values are not completely random - rather, they are randomly selected from a pre-defined dataset of possible values. This allows you some control over the possible values chosen - for example, in order to make sure the numbers are realistic. These datasets can be private or shared - private datasets are used by one wildcard within one calculated question; shared datasets are used by one wildcard within all calculated questions that use it. 通配符和数据集当 moodle 平台给学生发送一道计算题, 通配符会替换随机选择的值然而这些值并不是完全随机的, 它们是随机选择一个预定义数据集的可能值这就允许你可以控制可能的值选择例如, 为了确保数字是真实的这些数据集可以是私有的或共享的私有数据集在一个计算题上使用一个通配符 ; 共享数据集在所有计算题都使用一个通配符 Questionset-up To create (or modify) a calculated question there are three pages to work through. The instructions below take you through the pages, step by step: 设置问题

4 第 4 页共 16 页 2016/9/2 23:49 创建 ( 或修改 ) 计算题有三个页面来完成下面一步一步进行说明 : Page1.EditingaCalculatedquestion 1. Select the question category 2. Any shared wildcards for this category are listed beneath. If you change category, you'll need to click the "Update the category" button to refresh this list. There may not be any shared wildcards yet - if not, you can create them later if you wish. 3. Give the question a descriptive name - this allows you to identify it in the question bank. 4. Enter the questiontext. This should be the question you want the student to answer, and it must include all the information they need to calculate an answer. Therefore it must contain at least one wildcard, inside curly braces. For example, if you wanted the student to sum numbers A and B, the question text might read: "What is {A} + {B}?" You may also include quantities computed from wildcards using the syntax "{=...}: for example, the question "What is {={A}+{B}} - {A}?" with wildcard values A=4 and B=3 would display as "What is 7-4?" 5. Select an image to display if you want to add a picture to the question. For the student, it appears immediately after the question text and before the choices. If you want more control over how the image appears, include it in the question text above, using the HTML editor. 6. Set the defaultquestiongrade (i.e. the maximum number of marks for this question). 7. Set the Penaltyfactor (see Penalty factor below). 8. Moodle 1.7+: If you wish, add general feedback. This is text that appears to the student after he/she has answered the question. 9. Next add the formulafortheanswer. This formula must contain at least the wildcards that appear in the question text. See Correct answer formula syntax for further details. 10. Choose the grade that the student will get for this question if they give this answer. This should be a percentage of the total marks available. For example, you could give 100% for a correct answer, and 50% for an answer that is nearly right. Oneoftheanswersmusthavea100%grade. 11. Determine the tolerance for error that you will accept in the answer. The tolerance and tolerance type settings combine to give a range of acceptable scores. So, if tolerance = t, correct answer = x and the difference between the user's answer and the correct answer is dx, then the tolerance types are as follows: 1. Nominal - mark correct if dx <= t 2. Relative - mark correct if dx / x <= t 3. Geometric - mark correct if dx² / x² <= t² 12. The next 2 settings, "Correct answer shows" and "Format" determine the precision of the answer. Use these to select the

5 第 5 页共 16 页 2016/9/2 23:49 number of decimal places or significant figures you want to use. 13. Add some feedback which the student will see if they enter this answer. 14. You can specify as many answer formulae as you like - click "Add another answer blank" to add more. 15. You can also specify units for the answers. For example, if you enter a unit of 'cm' here, and the accepted answer is 15, then the answers '15cm' and '15' are both accepted as correct. If you add more than one unit, you can also specify a multiplier. So, if your main answer was 5500 with unit W, you can also add the unit kw with a multiplier of This means that the answers '5500', '5500W' or '5.5kW' would all be marked correct. Note that the accepted error is also multiplied, so an allowed error of 100W would become an error of 0.1kW. 16. Finally (!) you can click "Next page" to save what you've done and move on. If you are editing an existing question, you can click "Next page (new question)" to create a completely new question based on an existing one. 第一页. 编辑计算的问题 1. 选择一个问题的类别 2. 这一类所有的共享通配符都会在下面列出如果你要改变类别, 你需要点击更新类别按钮刷新该列表估计所有的共享通配符都有了 - 如果没有的话你可以以后创建 3. 在题目名称处可以给这个问题输入一个名称 - 这能使您在题库中找到它 4. 输入题干在题干部分显示你想要的学生回答的问题, 而且它必须包括所有他们需要计算一个答案的所有的信息因此, 在大括号内它必须至少包含一个通配符例如, 如果你想要的学生去将 A 和 B 加起来, 题干可能如下 : 什么是 {A}+{B}? 您可能还包括使用语法通配符的数量计算 {=...}: 例如, 在问题什么是 {={A}+{B}} - {A} 通配符的值 A =4 和 B =3 可能会会显示为什么是 7-4? 5. 如果你想将图片添加到这个问题的话, 你需要选择一个用于显示的图像对于学生而言, 图像会在问题文本呈现后和选择之前出现如果你想要更多地控制文本图像的显示, 包括图像在题干中的呈现方式, 可以使用 HTML 编辑器 6. 设置缺省分数 ( 是标记为这个问题的满分 ) 7. 设置惩罚因子 ( 见下文的 [Calculated_question_type#Penalty_factor 惩罚因子 ]) 8. Moodle 1.7+: 如果你愿意的话, 可以加上通用反馈这是显示他 / 她已经回答了这个问题的学生的文本 9. 下一步添加答案的公式这个公式必须包含至少出现在试题内容的通配符参见 [[Calculated_question_type#Correct_answer_formula_syntax 正确答案公式语法 ] 为进一步的细节 10. 选择当学生给出这个答案时, 他们可以获得的分数即成绩这应该是可用的总标记的百分比例如, 你可以给一个正确的答案 100%, 而将接近正确答案 50% 必须有一个答案是 100% 等级 11. 设置在答案中你可以接受的允许误差允许误差, 和允许类型设置相结合, 给出了这答案可接受的一系列用户答案所以, 如果允许误差为 t, 正确答案为 x, 用户的答案和正确答案之差为 dx, 容错类型如下 : 1. 标称 - 如果 dx <= t, 标记正确

6 第 6 页共 16 页 2016/9/2 23:49 2. 相对 - 如果 dx/x <= t, 那么标记正确 3. 几何 - 如果 dx²/ x²<= t², 那么标记正确 12. 接下来的 2 个设置, 正确答案显示和格式确定答案的精确度 '" 用这些来选择需要使用的小数位或有效数字的位数 13. 为进入查看答案的学生添加一些他们将会看到的反馈 14. 只要你喜欢, 你可以指定尽可能多的答案公式 - 点击添加一个空答案, 以增加更多 15. 您还可以指定答案的单位例如, 如果你在这里输入厘米作为单位, 并且正确的答案的单位是 15, 那么答案 15 厘米 ' 和 '15' 都会被认为是正确的如果您添加了多个单位, 你还可以指定一个乘数所以, 如果你的主要答案是 5500, 单位 W, 你也可以加上带有的乘数单位 kw 这意味着, 答案 '5500','5500W' 或 '5.5kW 的 ' 所有的这些答案都被认为是正确的需要注意的是允许误差也会与乘数 0.01 相乘, 因此允许误差为 100W 将变成 0.1 kw 16. 最后 (!), 你可以点击保存更改来将你所做的保存下来并继续前进如果您正在编辑现有的问题, 你可以点击克隆一份 ( 新的问题 ) 创建基于现有一个全新的问题 Penaltyfactor The 'penalty factor' only applies when the question is used in a quiz using adaptive mode - i.e. where the student is allowed multiple attempts at a question even within the same attempt at the quiz. If the penalty factor is more than 0, then the student will lose that proportion of the maximum grade upon each successive attempt. For example, if the default question grade is 10, and the penalty factor is 0.2, then each successive attempt after the first one will incur a penalty of 0.2 x 10 = 2 points. 惩罚因子惩罚因子只适用于当问题是用于测试使用自适应模式, 即学生允许在一个问题进行多次尝试甚至包括在一个测试中的相同的尝试如果惩罚因子大于 0, 那么学生将失去在每个连续的尝试中该比例最高的等级, 例如, 如果默认问题等级是 10, 惩罚因子是 0.2, 那么第一次尝试后的每一次连续尝试受到惩罚 = 2 分 Tolerance As for numerical questions it is possible to allow a margin within which all responses are accepted as correct. The "Tolerance" field is used for this. However, there are three different types of tolerances. These are Relative, Nominal and Geometric. If we say that the correct answer at quiz time is calculated to 200 and the tolerance is set to 0.5 then the different tolerance types work like this: Relative: A tolerance interval is calculated by multiplying the correct answer with 0.5, ie in this case we get 100 so for this tolerance the correct response must be between 100 and 300. (200 ± 100) This is useful if the magnitude of the correct answer can differ greatly between different wildcard values. Nominal: This is the simplest tolerance type but not very powerful. The correct response must be between and (200 ± 0.5) This tolerance type can be useful if the differences between different correct answers are small.

7 第 7 页共 16 页 2016/9/2 23:49 Geometric: The upper limit of the tolerance interval is calculated as *200 and is the same as for the relative case. The lower limit is calculated as 200/( ). The correct response must then be between and 300. This is useful for complex calculation that must have great tolerances where relative tolerances of 1 or more would be used for the upper limit but clearly not acceptable for the lower limit as it would make zero a correct answer for all cases. The field Significant Figures does only relate to how the correct answer should be presented in the review or the reports. Examples: If it is set to 3 then the correct answer would be presented as 13.3; 1236 would be presented as 1240; 23 would be presented as 23.0 etc. 容错对于数值问题是可以允许在一定范围内的响应是正确的容错字段即用于此然而, 有三种不同类型的公差这些都是相对名词词组和几何如果在测试时间内正确的答案计算到了 200, 并且容差设置为 0.5, 那么不同类型的容差按照以下方式运作 : 关系词 : 容错区间的计算方法是用正确答案乘以 0.5, 即在这种情况下我们得到 100, 这个容差的正确响应必须在 100 年和 300 年之间 (200±100), 如果正确答案的大小可以在不同通配符值之间有很大的不同的话, 这种方法是适用的名词词组 : 这是最简单的容差类型但不是很强大正确的反应必须在和之间 (200±0.5), 如果不同的正确答案之间差异很小, 这种类型的容差事试用的几何 : 这种类型容错区间的上限计算为 * 200, 和关系词的情况是一样的计算下限为 200 /( ), 正确的响应必须是在和 300 之间对于复杂的计算这是非常有用的, 即必须有强大的容错的相对公差为 1 或更多可用于上限, 但显然不可接受的下限, 因为它会使零成为所有情况下的正确答案有效数字字段只涉及正确答案在审查或报表中的呈现方式例子 : 如果它被设置为 3 然后正确答案将被识别为 13.3;1236 将被识别为 1240;23 将被识别为 23.0 等 Page2.Choosedatasetproperties Each wildcard that you specify in the answer formula must have an associated set of possible values - this is its dataset. Each of the wildcards is listed on this page along with a choice of dataset: private i.e. only used by this question shared i.e shared with other calculated questions in the same category Using a shared dataset can save time when you are creating a lot of similar calculated questions. Note that even when creating a question for the first time, this page may say that your wildcard "will use the same existing private dataset as before." This just means that Moodle has already tentatively created a private data set for that wildcard: if a private dataset is what you want, leave this choice selected. If there is anything in the question text that looks like a wildcard, but does not appear in any of the answer formulae, you can specify whether or not this is meant to be a wildcard. If it is, you can choose whether it should use a private or shared dataset. To continue, simply choose your preferred dataset for each wildcard, then click "Next Page".

8 第 8 页共 16 页 2016/9/2 23:49 Page 2. 选择数据集属性指定答案公式中每个通配符必须有一套相关的可能的值这是其数据集每个这个页面上列出的通配符是随着数据集的选择 : 私有的, 即即只能由这个问题可共享的, 即可以与统一类别中的其他计算共享问题使用共享数据集, 可以节省你在创造类似计算问题上的时间注意, 甚至当第一次出题目, 此页面可能会提示, 通配符 " 将使用之前现有的私人数据集 " 这只是意味着 Moodle 已经有初步为该通配符创建好的私有数据集 : 私人数据集即是你想要的数据, 前提是如果选中了此选项如果在问题文本中有些看起来像一个通配符, 但却没有出现在任何答案公式中, 您可以自行分辨这是否需要一个通配符如果是, 您可以选择它应使用专用还是共享的数据集若要继续, 只需选择您首选的数据集的每个通配符, 然后单击 " 下一页 " Page3.Editthedatasets Now we need to create the set of possible values that each wildcard can take. Warning - this page is a bit confusing! There are two ways of creating values - you can type them in yourself and add them to the list, or you can have Moodle generate them for you. Page3. 编辑数据集现在我们需要进行每个通配符能够获取的可能值的设置警告 : 这个页面有点混乱哦! 有两种创建值的方法 : 你能够手动输入将他们添加到列表中, 或者你也可以让 Moodle 自动生成 Adding/deletingyourownvalues Adding individual values to the list is easy: 1. In the 'Param' field for each wildcard, enter the value you want 2. Scroll down to the 'Add' section and click the Add button (leaving the number of items set to 1) 3. Repeat the above steps as many times as necessary (the maximum number of items is 100) To delete values from the list:

9 第 9 页共 16 页 2016/9/2 23:49 1. In the 'Delete' section, select the number of items to delete 2. Click the Delete button 添加 / 删除你的值向列表中添加个别的值很容易 : 1. 在每一个通配符字段的参数域, 输入你想要的值 2. 向下滚动到添加部分, 单击 Add 按钮 ( 离开条目的数量设置为 1) 3. 根据需要重复以上步骤多次 ( 条目的最大数量为 100) 从列表中删除值 1. 在删除部分, 选择删除的项目的数量 2. 点击删除 LettingMoodlecreatevalues 1. Start with the "Range of Values" fields, and enter the lower and upper limits for the values you would accept 2. Choose a number of decimal places for the value 3. Choose the distribution of values between the limits - 'uniform' means any value between the limits is equally likely to be generated; 'loguniform' means that values towards the lower limit are more likely. 4. Now move down to the 'Add' section and click on "force regeneration" 5. In the menu next to the Add button, choose the number of sets of random values (items) you wish to add to the list. (Note that the maximum total number of items in your list is 100.) 6. Finally, click Add to append the new values to the list 7. Note: If you want more control over the items that Moodle adds, you can do them one at a time and preview the values before you add them. Click the "Get New Item to Add" button to make Moodle generate new values in the "Item to Add" section at the top. If you like them, click "Add" for 1 item; if not, click "Get New Item to Add" again to get new values. 让 Moodle 自动生成值 : 1. 从数值范围域, 输入你能够接受的较低和较高的值的限制范围

10 第 10 页共 16 页 2016/9/2 23:49 2. 选择若干值的小数位 3. 在范围内选择值的分配均匀意味着范围内的任何值出现的可能是相同的 ; 对数均匀意味着出现较小的值的可能性更大 4. 现在向下移动到添加部分, 单击重建 5. 在 Add 按钮旁边的菜单栏, 选择您希望添加到列表中的随机值的数量 ( 项 ) ( 注意, 在你的列表上的项目的最大总数是 100) 6. 最后, 点击添加附加新的值到列表 7. 注意 : 如果你想更多的控制 Moodle 添加的项目, 你可以每次添加一个, 将它们添加前进行预览点击获取新项目添加按钮使 Moodle 在顶端的添加项目部分生成新值如果你喜欢, 可以点击添加一个项目, 如果不, 再次点击获取新项目添加得到新的值 Finishingoff Once your list of items (values) is complete, you are finished. It's up to you how many values you add - the more values you add, the more a question can be used by the students without them seeing the same values repeatedly. Note that if you delete values from the list, you can put them back again. Change the "Next Item to Add" option to "reuse previous value if available", then the next time you add items, Moodle will restore your previously-deleted items from the dataset. Once your list of values is complete, you can click 'Save changes' to finish. 结束工作 : 当你的项目列表是完整的, 你就完成了添加多少值取决于你自己, 你添加的值越多, 学生回答问题时看到的重复值的概率就越小值得注意的是, 如果你从列表中删除值, 你还可以再次把他们放回去不去选择添加下一条, 而选择如果可用, 复用前一条, 然后当下一次你添加值的时候 Moodle 将从数据集里恢复你先前删除的值当你的值列表是完整的, 你可以点击保存更改完成 Whatdoesthe'Updatethedatasetsparameters'buttondo? Warning: This button can affect several questions, so be careful before using it. Assume you have selected dataset parameter for {a} to be any value between 1-10 and generated a question. In the second question also you decide to use a SHARED wildcard called {a}. Inherently, it will show a value between However, your need here changes and you want to make it

11 第 11 页共 16 页 2016/9/2 23: instead. Then, you change them in the range and click this button. Voila! the values change and you can add new items here using the 'Get New item to add'. However, if you go back to your previous question, you will see that values would change there too, because it is a shared dataset. If you do not update parameters, then this may not happen and will generate a new set of values and displays them in the "Item to Add" section. 更新数据集按钮是做什么的? 警告 : 这个按钮会影响几个问题, 所以用以前仔细确认假设您选择数据集参数 {a} 赋 1-10 之间的任何值, 生成的一个问题在第二个问题里你也决定用 {a} 作为一个共享的通配符内在地, 它将显示一个 1-10 的值然而, 你需要它在这改变, 你想让它是的值那么, 你改变它们的范围, 然后点击这个按钮瞧, 值改变了, 你可以用获取新的值以添加的按钮在这添加新的条目但是, 如果你返回到先前的问题, 你将会看到值在那儿也改变了, 因为它是一个共享的通配符如果你不更新参数, 这可能不会发生而且将生成一系列新的值并在添加条目部分呈现它们 Correctanswerformulasyntax 正确答案的公式语法 DONOTPUTTHE=signintheformula. 不要放在这里 = 公式中的符号. In the recent versions of the calculated question type, you could have more than one answer formula and applied a specific grading value to each of them as long as there is at least one 100% correct answer formula. If more than one correct answer formula input field are displayed when editing, your site has the multiple answer feature. 在最近计算题类型的版本中, 你可以有超过一个以上的答题公式, 只要他们每个人中至少一个 100% 是正确答案, 并应用一种特定的评分值如果在编辑的时候显示一个以上的正确答案公式输入栏, 你的网站有多个答案的功能 As a general rule, write these formulas like you would in a calculator e.g * sin(3/{x}) A notable exception is exponentiation, where x 3 cannot be entered as {x}^3, but instead should be entered as pow({x}, 3).

12 第 12 页共 16 页 2016/9/2 23:49 作为一般的规则, 在公式中写下你的计算例如 : < 代码 >3 + 5 * sin(3/{x})</ 代码 > 值得注意的是幂, 在计算 X 的 3 次方时, 不应该输入 < 代码 >{x}^3</ 代码 >, 而是应该输入 < 代码 >pow({x}, 3)</ 代码 >. Each function's placeholders and other arguments should be in parentheses (brackets). For example, if you want students to calculate the sine of one angle and cosine of two times another angle, you would enter sin({a}) + cos({b}*2) or sin({a}) + cos(2*{b}). 每个函数的占位符和其他参数应在括号 ( 括号内 ) 例如, 如果你想让学生计算一个角的正余弦和另一个角的两倍, 你应该输入 < 代码 >sin({a}) + cos({b}*2)</ 代码 > or sin({a}) + cos(2*{b})</ 代码 >. It's usually better to have too many parentheses (brackets) than too few. The server won't care, and the more specific you are about what you mean, the more likely it will like your complex formulas. 一般情况下, 有更多的括号会更好一些服务器不关心这个, 这样更能具体的表达你的意思, 也会更加喜欢你复杂的公式 There is no implicit multiplication. To you, the human editor, "5(23)" or "5x" may seem perfectly obvious. To the server doing the math, it's crazy talk and won't be understood. Always use the "*" for multiplication. 没有隐含的乘法, 对你来说, 人类的编辑器,"5(23)" or "5x" 似乎更加完美服务器在执行公式中, 这是疯话并且会被误解的, 经常用 "*" 来表示乘法 Any special mathematical function must have parentheses around its values. Take the sine function in the first bullet point for instance. Notice that the 3 / x is wrapped in parentheses (brackets)--this is so the server can understand it properly. Without those parentheses, the server won't know if you mean "(sin 3) / x" or "sin (3 / x)" and will reject the entire formula accordingly. 任何一种特殊的数学函数必须有括号围绕其价值第一个重点是正弦函数, 注意 "3 / x" 是有括号的 -- 这才是服务器能够理解的如果没有括号的话, 如果 "(sin 3) / x" or "sin (3 / x)", 服务器是不会理解并会拒绝整个公式变量函数计算问题不仅可以用简单的算术运算符, 下面的函数也可以在 1.5 及版本更高版本的版本中使用 Function 函数 Explanation 说明 abs acos Absolute value 绝对值 Arc cosine -- output in radians.

13 第 13 页共 16 页 2016/9/2 23:49 反余弦 - 弧度输出 acosh asin asinh atan2 atan atanh bindec ceil Inverse hyperbolic cosine -- output in radians. 反双曲余弦 - 弧度输出. Arc sine -- output in radians. 圆弧正弦 - 弧度输出 Inverse hyperbolic sine.-- output in radians. 反双曲正弦 -- 弧度输出 Arc tangent of two variables -- pass in two values like (y, x), and you'll get the atan(y/x), adjusted to the proper quadrant. (Note: The variables are in the reverse order to atan2(x,y) in Excel) Output is radians. 两个变量的反正切 - 传递两个值, 例如 (Y,X), 你会得到反正切 (Y / X), 调整到适当的象限 ( 注 : 变量是相反的顺序来 ATAN2(X,Y) 在 Excel) 输出是弧度 Arc tangent -- output in radians. 反正切 - 弧度输出 Inverse hyperbolic tangent-- output in radians. 反双曲正切输出弧度 Binary to decimal 二进制转化为十进制 Round fractions up

14 第 14 页共 16 页 2016/9/2 23:49 进一法 cos cosh decbin decoct deg2rad exp expm1 floor Cosine -- in radians!!! Convert your degree measurement to radians before you take the cos of it. 余弦在弧度转化之前, 你把它的余弦转换为弧度 Hyperbolic cosine -- in radians!!! Convert your degree measurement to radians before you take the cosh of it. 双曲余弦 - 弧度! 你把它的吸烟与健康委员会之前, 你的学位测量转换为弧度 Decimal to binary 十进制转换为二进制 Decimal to octal 十进制转换为八进制 Converts the number in degrees to the radian equivalent 度数转换为弧度 Calculates the exponent of e 计算的指数 e Returns exp(number) - 1, computed in a way that is accurate even when the value of number is close to zero 返回 EXP( 数 )- 1, 即使当数的值接近零, 计算的方式是准确的 Round fractions down 退一法

15 第 15 页共 16 页 2016/9/2 23:49 Predefined constants Actually there is NO Predefined constant that is allowed other than pi() as a function without parameter. 预定义常量实际上是没有预定义的常量, 除了没有参数的 π() 函数 Synchronization You could use shared wild cards to get the same values across questions in a quiz. A simple example will be to use the same radius in a first question asking for the perimiter of a circle of {radius}cm and a second question asking for the surface of a circle of {radius}cm. When the quiz will be shown to the student the two questions will shown the same {radius} value. However the synchronization will work ONLY if the questions are kept in the SAME category and have the SAME NUMBER OF DATASETS. If you need to move the synchronized questions to another category, you need to do it by editing the questions. (This restriction should be released by sept. 2010). 同步你可以在问题测试时使用共享通配符来得到相同值关于用一样的半径简单示例 : 第一个问题求圆的周长 { 半径 } 厘米, 第二个问题求圆的表面积 { 半径 } 厘米当呈现两个问题测试给学生时显示相同的 { 半径 } 值然而, 如果问题都属于 SAME 类别, 同步将显示 ONLY, 则有相同数量的数据集如果你需要将同步问题移动到另一类别需要编辑该问题 ( 该限制于 2010 年 9 月公布 )

16 第 16 页共 16 页 2016/9/2 23:49 See also Using Moodle forum discussions: 详见用 Moodle 论坛讨论 : couple questions about "edit datasets page" in calculated questions ( /discuss.php?d=150923) Capital vs lower case letters with units ( 取自计算题 &oldid=3139 本页面最后修改于 2015 年 12 月 28 日 ( 星期一 ) 09:23 除非另有声明, 本网站内容采用知识共享署名 - 非商业性使用 - 相同方式共享授权

Microsoft Word - template.doc

Microsoft Word - template.doc HGC efax Service User Guide I. Getting Started Page 1 II. Fax Forward Page 2 4 III. Web Viewing Page 5 7 IV. General Management Page 8 12 V. Help Desk Page 13 VI. Logout Page 13 Page 0 I. Getting Started