OK, so far we are pretty happy. Now let's do a change of variables.
现在还是皆大欢喜，对变量做一点变化。
But, once you've reduced it to an actual change of variables problem, I expect you to be able to know how to do it.
不过，用变量替换的办法来做的话。。。,希望你们能知道怎么去做这种题。
So anyway, this is the origin, and then the last side, y equals zero, x So, somehow, in the change of variables, this square becomes this triangle.
变成另一个点，无论如何，这就是原点，最后一条边，y=0，一直变化，最终变成了v=0，and，x，varies，just，becomes，v，equals，zero。,所以，在变量替换的过程中，这个正方形变成了三角形。
And that would be equivalent to what we did with a previous change of variables. So, in this case, certainly you would never draw a picture like that.
这将与我们先做变量替换是一样的，所以，在这种情况下，大家不会做出那样的图。
General formulas are derived for calculating mutual admittance of planar slots radiating into a lossless space by making use of change of variables.
本文利用变量代换法导出了向无损耗空间辐射的，尺寸相同和不相同的平面缝隙辐射元互导纳的通用计算公式。
We establish an equivalence between the generalized strongly complementarity problems and the Wiener Hopf equations by using a change of variables technique.
指出了椭球形区域上三重积分的一科变量替换方法，并说明了其应用。
Through the change of variables, the original problem with inhomogeneous boundary condition is reduced to the boundary value problem of homogeneous boundary condition.
并通过变量代换，将原问题的非齐次边界条件转化为齐次边界条件的边值问题。
We could do it dy dx. Or, maybe we will want to actually make a change of variables to first shift this to the origin, x-2 you know, change x to x minus two and then switch to polar coordinates.
也可以dy，dx来划分，或者,对变量做一下变化，移动到原点，就是把x变成,然后再转化成极坐标。
Because you never change the states of your variables, proving your program is much easier.
由于从来没有改变变量的状态，所以证明您的程序非常简单。
Models of climate change do not take into account all potential variables, including the sun's influence... read more.
模型的气候变化，没有考虑所有可能的变数，其中包括太阳活动的的影响力。
Variables serve as placeholders for data that can change during the execution of a program.
变量为数据提供占位，使得其可以在程序运行时改变。
This would be a major change to programmer expectations about local variables, especially in the absence of any special declaration that this is one of those weird new long-lived local variables.
这是对程序员关于局部变量的预期的重大变更，具体来讲，缺少了任何将此变量声明为奇怪的、新的耐久局部变量的特殊声明。
When a message is translated into another language, the position and order of the substitution variables might have to change to meet the syntax requirements of the target language.
当一条消息被翻译成其他语言之后，有可能需要根据目标语言的语法更改替换变量的位置和顺序。
When the first and second soft goals change, the types of availability variables change.
当第一或第二软目标更改时，可用性变量的类型将更改。
Business users can log in to the business space and easily change the values of the business variables without it involvement.
业务用户可以登录到业务空间并轻松地修改业务变量的值，无需it介入。
In this section, we'll configure business Space to change the values of the business variables.
在本节中，我们将配置业务空间以修改业务变量的值。
First, although it doesn't look that way initially, this is a major change to the semantics of local variables.
首先，它看起来与最初并不相同，它是对局部变量语义的一项重要更改。
Democratic elections are scientific experiments: every couple of years you carefully alter the variables with an election and observe the results. If you want different results, change the variables.
每隔几年，你就会在某个选举中谨慎地改变一些变量，然后观察结果。
You could, for example, change this program so that it added two real Numbers simply by changing the types of the variables and the names of the input methods, as shown in Figure 2-3.
比如你简单修改变量的类型和方法的名字，这样程序就可以做实数的加法了，如图2 - 3。
One of the primary sources of bugs occurs when variables change states.
变量状态改变是产生bug的一个主要来源。
Be sure that this id doesn't change over time by inadvertently passing in variables from the controller - in the case of the feed id, you want it to be both unique and invariant.
应确保这个id以后不会因为无意中传入来自控制器的变量而变化—对于feed id，它应该既是惟一的，又是不变的。
But that's a clunky and brittle solution, prone to hard-to-find errors if the order of components were to change within the line list, but the variables weren't updated appropriately.
但这是一种笨拙的解决办法，如果在行列表中改变了各个元素的顺序，将导致难以发现的错误，并且没有适当地更新变量。
The most interesting change with options, parameters, and variables is the removal of the value attribute; values are now the result of evaluating an XPath expression defined by a select attribute.
对选项，参数和变量来说，最有趣的变化是移除了值属性；现在值是一个Xpath表达式的计算结果，该表达式由一个选择属性定义。
Variable Editor: While stopped on a breakpoint, you change the values of component variables.
VariableEditor：当在断点处停止时，您可以更改组件变量的值。
If required, you can change the behavior of the variables via the 'Prompt Type' property by using the dropdown menu.
如果需要，通过使用下拉菜单，您可以通过Prompt Ty p属性更改变量的行为。
This restriction is lifted in Groovy; you can change the values of variables in a containing scope from within an anonymous inner class.
Groovy则消除了这种限制，在Groovy中，匿名内部类可以修改外部的变量值。
Content of the variables can change, as with PHP.
变量的内容可以更改，像在php中一样。
Climate change should already be one of the variables built into your future business planning and hence your IP strategy.
气候变化应当已经成为了你将来的工作计划，以及知识产权战略的开始中的一个变量。
Such forecasts are of course subject to countless variables, but the report argues that the change in rankings should occur in roughly the same order even if the exact dates differ.
这种预测当然有无数可变因素，但是该报告称，即使确切的时间会有所不同，但是排名的变化几乎是相同的。
On top of this, they may change the design, volume, and other variables up to the last moment before production.
只有这样，他们才能应对市场变化，赶在正式生产前，及时修改零件的设计、订单批量或者其他变量。
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