[考古] 求最大最小值和偏微
1. For f(x,y) = x^3-6x^2-3y^2, (x,y)屬於[-1,1]*[-1,1].
Find the absolute maxiumum and absolute minimum values of f
and where they occur.
2.(a) Let P(t,x) = 1
_______ e^[(x^2)/(2t)] ,show that
√(2πt)
δP/δt = (1/2)*(δ^2 P/δx^2).
(b) Suppose that f and g are function of x and y such that
δf/δx = δg/δy and δf/δy = δg/δx
and suppose δf/δx = 0 , f(1,2) = g(1,2) = 8, f(0,0) = 4
Find f(x,y) and g(x,y)
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◆ From: 59.127.194.112
※ 編輯: zxc321 來自: 59.127.194.112 (03/27 01:21)
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※ 編輯: zxc321 來自: 59.127.194.112 (03/27 13:14)
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