Let F(x, Y) = $4 x ^ { 2 }$ + 2

Short Answer

Let f(x, y) = $4 x ^ { 2 }$ + 2 $y ^ { 2 }$ + 3xy. Find $\frac { \partial f } { \partial y }$ .
Enter just a polynomial in y plus or minus a polynomial in x both in standard form (no label, no parentheses).