Re: [問題] 徵求微積分高手～XD
會嗎?還好吧
※ 引述《andrewchiang (Andrew)》之銘言：
: b)換極座標不會比較快 反而還很醜...我錯了...
: 會變成這樣
: dxdy π/3 r(θ) rdrdθ
: ∫∫------------- = ∫ ∫ -------------
: (1+x^2+y^2)^2 0 0 (1+r^2)^2
: 2√3
: 而其中r(θ) = ---------------- 這個算法...自取滅亡= =
: (sinθ+√3cosθ)
√3 √3
而其中r(θ) = ------------------------ = --------------
cos60*sinθ+ sin60*cosθ sin 60+θ
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