a) 5
b) 6
c) 7
d) 8
If W = x2 y2 + xz, the directional derivative \( \frac{dW}{dl} \) in the direction 3 ax + 4 ay + 6 az at (1,2,0).
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If W = x2 y2 + xz, the directional derivative \( \frac{dW}{dl} \) in the direction 3 ax + 4 ay + 6 az at (1,2,0).
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