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Find the directional derivative of:
∅=(x+2y+z)²—(x—y—z)² at the point (2, 1, -1) in the direction of A=i—4j+2k.


Plz help show me work

Answers

Answered by Steve
Whatever you copied and pasted from mangled the special characters. Try spelling out special stuff, such as sqrt() etc.

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