作者gs86137 (小飞鱼)
看板trans_math
标题[微分] 多变数为分
时间Wed Jun 9 10:55:57 2010
dg dg
Find ------ and ------ given that f(x,y,z) = √x ·ｙ^2 ·e^2z
ds dt
2
x(s,t) = 3t^2 + 2s y(s,t) = 6t + ----- z(t) = 1 - t^3
s
and g(s,t) = f( x(s,t) , y(s,t) , z(t) ).
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