[微分] 多變數為分

[gs86137 (小飛魚)]

        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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