[微積] 我在變換變數裡鬼擋牆,誰能救救我??
明明就是單純的變換變數,
可是想了一個晚上還是想不出來..><...
請救救我吧!!
π
∫ (1-cosθ)sinθdθ
0
☆ 3
= ∫ 4(sin θ/2) d(sinθ/2)
0
又假設 Z = C (sinθ/2), C = constant
△ 3
= ∫ 4(Z/C) (1/C)dZ
0
我在☆跟△到底該填什麼?? ....><....
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