[理工] [工數]-表面面積
2 2
求x+2y+2z=12 被x=0,y=0,x +y =16 所截之表面積?
我求出dA=3/2 dxdy
2pi 4
代入 ∫∫dA= ∫ ∫ 3/2 dxdy=12pi
s 0 0
為什麼答案卻是6pi 請問我有哪裡帶錯了嗎= =?!
請高手解答!!非常感謝!!
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