Help pls for question 6

plua 6. [-/10 Points] DETAILS SCALCET8 16.3.013. MY NOTES Consider the vector field F and the curve C below. Need F ( x , y ) = x2 y i + x3y2j C: r (t ) = ( t4 - 2t, t4 + 20 ), Ost5 1 e th (a) Find a potential function f such that FVf. ansc f ( x, y ) = er (b) Use part (a) to evaluate Vf . dr along the given curve C