[微積] 二重積分
Ω={(x,y)│x^2+y^2≦1}
A=∫∫ sin(x^2)cos(y^2)dxdy
Ω
B=∫∫ cos(x^2)sin(y^2)dxdy
Ω
Let C=A+B. Then C is equal to an iterated integral
which is express in terms of polar coordinates r and θ.
First derive this iterated integral expression for C in polar coordinates,
then compute the value of C.
Prove that A = B.
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