10. (10 Points) Evallate the line interal
10. (10 Points) Evallate the line interal along the curve C : r(t) = (t2+1)i+ (t2 - 1)j, 0 ≤ t ≤ 2. Hint you may find a potential function f of the vector field F(x,y) = find f so that F = ∇f.