The area R is the double integral over R of a function one.
区域R的面积是函数1在R上的二重积分。
We've seen various formulas for how to set up the double integral.
我们已经学过，如何建立这种二重积分的公式。
The double integral side does not even have any kind of renaming to do.
没有必要对二重积分重新命名了。
This side here is a usual double integral in the plane.
这边是平面上普通的二重积分。
How do you express the area as a double integral?
如何用二重积分来表示面积呢？
How do you express the area as a double integral?
如何用二重积分来表示面积呢？
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