Question: Let f ( x , y ) = x 3 y 3 and c ( t ) = ( t 2 , 2 t 3

Let f(x,y)=x3y3and c(t)=(t2,2t3)
(a)Calculate:
gradf*c'(t)=
(b)Use the Chain Rule for Paths to evaluate ddtf(c(t))att=1.
ddtf(c(1))=

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