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April 21, 2014

Homework Help: cal3

Posted by Lucy on Monday, February 27, 2012 at 12:58am.

Consider the function f(x,y)=xy+xz+yz+4 at point p=(2,-1,1)
a)find the unit vector in direction of p.
b) find the directional derivative at p in the direction of <0,-1/(sqrt2),-1/(sqrt2)>

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