f(x, y, z) = xe^y + ye^z + ze^x, at (0, 0, 0),(adsbygoogle = window.adsbygoogle || []).push({});

directional vector v = <-2, 0, 5>

i solved for gradient f = (e^y + ze^x, xe^y + e^z, ye^z + e^x), at f(0,0,0) to be...

gradient f = (1,1,1)

this would make the answer just be -2 + 0 + 5 = 3

but this isn't right.

can someone show me what i did wrong?

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# Homework Help: Directional derivatives, SIMPLE

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