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作者 afflic 在 PTT [ trans_math ] 看板的留言(推文), 共17則
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3F→:因為f(x,y) = xe^y是三維空間的圖形114.45.187.160 07/21 23:36
4F→:三維空間中change rate的最大值114.45.187.160 07/21 23:37
5F→:基本上都是化成x、y、z的函數之後114.45.187.160 07/21 23:38
6F→:再做gradient114.45.187.160 07/21 23:38
3F→:ㄜ...當然是畫過圖了才會有這個疑問@@111.248.48.143 07/20 16:47
9F→:為什麼0~2π/3是兩片而不是兩個半片111.248.48.143 07/20 21:12
10F→: 0~π是三片而不是1.5片?111.248.48.143 07/20 21:12
11F→:而且如果今天是積r=ksin(2θ)111.248.48.143 07/20 21:13
12F→:從0積到π然後再乘2倍,就不會有這個問題@@111.248.48.143 07/20 21:14
13F→:0~π的時候sin(2θ)不是也會有負的?111.248.48.143 07/20 21:15
14F→:話說網路上有沒有東西111.248.48.143 07/20 21:38
15F→:可以畫出這種圖形的部分軌跡呀?111.248.48.143 07/20 21:38
17F→:樓上那個要輸入什麼才能畫極座標呀111.248.48.143 07/20 22:12
3F推:沒錯,就是代微積分基本定理111.248.48.143 07/20 22:11
3F推:也可以令x=sinθ111.248.48.143 07/20 22:22
3F推:感覺題目沒有把上下限講清楚@@111.248.48.143 07/20 22:37
9F推:->0-不在定義域內,所以不用討論?219.81.152.160 01/09 11:10
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