dy x dt That tells us dx is x prime of t dt.
是y’dt，dy，becomes，y，prime，of，t，dt。,是x，So，，we，know，x，is，x，of，t。,它告诉我们dx是x
所以Tds就是。
Well, now we have a relation between dx and dz.
从而我们就可以得到dx和dz的关系。
It is in the DX community, Room 306, No.2 building.
在DX小区2幢306房。
So, that means du dv is worth five times dx dy.
所以，这也意味着dudv比dxdy大五倍。
OK, so I'm computing the integral of y dx x dy.
我来计算ydx+xdy的积分。
So we found an expression for dz in terms of dx and dy.
我们得到了dz关于dx和dy的表达式。
I guess that was a minus sign, of m of minus m of dx.
我猜那是个负号，对M - M。
OK, and so the coefficients of dx and dy are the partials.
那么dx和dy前面的系数就是偏导数。
Amazon — Kindle 2 and DX sparked a boom in digital e-readers.
亚马逊——Kindle2和DX引发了数字电子书阅读器热潮。
Well, if you are doing it clockwise, it is in front of dx.
如果是顺时针的话，那就在dx前面。
dxdy So that's just x. So, that means that du dv is x dx dy.
这个就是x，这就意味着dudv是x倍的。
Or, if you prefer, that's negative integral from a to b of M of dx.
或者你喜欢的话，那就是积分的负值,在a到b上对MdX的积分。
On the math it is a line integral of something dx plus something dy.
从数学意义上来说，这是dx部分加上dy部分的线积分。
Except that the IKVM is not a simple, dx-like file format converter.
但IKVM并不是一个简单的、类dx的文件格式转换器。
So, we should get to something that will be the same integral dx dy.
也就是在某个边界里算dxdy的积分。
dx/a OK, so if we set u equals x over a, that means du is one over adx.
如果令u等于x/a，就意味着du就是。
I've got a DX-11 which is an FM synth, which has defined my sound up to now.
我有一架DX - 11软音源调频合成器至今为止我的声音都是由它调和的。
Or, you can move dy to that side and express dy in terms of dx and dz, and so on.
或者把dy移到另一边，用dx和dz来表示dy，诸如此类。
dxdy Last time I told you if we have dx dy we could switch it to r dr d theta.
上一次课提到，如果给出,我们可以把它转换为rdrdθ
dx/dt So and I have something of the form dx/dt is x equal to constant times x.
我有一些关于这个形式,等于常量乘以。
If you end up with a dx, dy, dz in the surface integral, something is seriously wrong.
如果在这个曲面积分中是以dx,dy,dz结尾的，则表明出现了很大的问题。
And, once you have a formula for ndS, that will relate ndS to maybe dx dy, or something else.
一旦有一个ndS的公式，那将会把ndS和dx,dy联系起来，或者其他的一些东西。
the general notation for vector dr-- y equals dx, x roof, plus dy, y roof, z plus dz, z roof.
总的向量dr的符号-,=dr向量x+dy向量，+dz向量。
So, whenever I see dx, I will replace it by, well, -sin the derivative of cosine is negative sine.
当我看到dx，就把它替换成cos的导数，也就是。
And, for that, we'll have to figure out a way to slice this region nicely. We could do it dx dy.
为了计算二重积分，我们必须想出一个办法，来适当地划分这个区域，我们可以按dx,dy来划分。
With the Kindle DX, Amazon is obviously also making a big push for the adoption of electronic textbooks.
通过KindleDX,Amazon极大的促进了电子教材的普及。
Once you have found the ratio between du dv and dx dy, then it works one way or it works the other way.
你一旦找到了dudv和dxdy之间的比率，它在这个情况下行得通，在相反的情况下行得通。
While the function that you are integrating goes before the dx dy and not into the bounds or anything like that.
而积分函数就是dxdy前的这个函数，它与积分边界无关。
While the function that you are integrating goes before the dx dy and not into the bounds or anything like that.
而积分函数就是dxdy前的这个函数，它与积分边界无关。
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