Find the directional derivative of ∅(𝑥, 𝑦, 𝑧) = 𝑥

2

𝑦𝑧 + 4𝑥𝑧

2

at the point (1, -2, -1) in the

direction of the normal to the surface 𝑓(𝑥, 𝑦, 𝑧) = 𝑥 𝑙𝑜𝑔 𝑧 − 𝑦

2 𝑎𝑡 (−1,2,1)

asked by guest
on Jan 17, 2025 at 5:55 am



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