高等数学求解答
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z = e^(yz) + xsin(x+y)
令 F = e^(yz) + xsin(x+y) - z
则 F'<x> = sin(x+y) + xcos(x+y)
F'<y> = ze^(yz) + xcos(x+y)
F'<z> = ye^(yz) - 1
在 点 P(π/2, 0, 1+π/2),
F'<x>(P) = 1, F'<y>(P) = 1+π/2, F'<z>(P) = -1.
切线方程是 (x-π/2)/1 = y/(1+π/2) = (z-1-π/2)/(-1)
令 F = e^(yz) + xsin(x+y) - z
则 F'<x> = sin(x+y) + xcos(x+y)
F'<y> = ze^(yz) + xcos(x+y)
F'<z> = ye^(yz) - 1
在 点 P(π/2, 0, 1+π/2),
F'<x>(P) = 1, F'<y>(P) = 1+π/2, F'<z>(P) = -1.
切线方程是 (x-π/2)/1 = y/(1+π/2) = (z-1-π/2)/(-1)
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