[考古] 交大
x y
Evaluate the line integral ∮(-y + -----------)dx + (x + -----------)dy
c x^2 + y^2 x^2 + y^2
Where c is the curve : |x| + |y| = 1,with clockwise orientation.
我看黃培剛追分寶典的解答寫 由"變形定理"
x y
原式 = ∫(xdy - ydx) + ∫---------dx + ----------dy
c c x^2 + y^2 x^2 + y^2
我想問的是,什麼是變形定理呀? @@a
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