Question: Let f ( x , y ) = l n ( 2 x ) + y - 1 2 - 7 with x ( r

Let f(x,y)=ln(2x)+y-12-7 with x(r,s)=rtan-1(s) and y(r,s)=3s2. By using the chain rule, find delfdelr.
Let f ( x , y ) = l n ( 2 x ) + y - 1 2 - 7 with

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