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August 30, 2014

Homework Help: Calc

Posted by Dani on Sunday, February 27, 2011 at 11:31pm.

The directional derivative of z = f(x,y) at (2,1) in the direction toward the point (1,3) is -2/sqrt(5), and the directional derivative in the direction toward the point (5,5) is 1. Compute dz/dx and dz/dy at (2,1).

I have no idea how to solve this problem. Help, please? Thank you.

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