Calculate the Laplacian ∇2f\nabla^2 f∇2f for f(x,y)=x4+y2f(x, y) = x^4 + y^2f(x,y)=x4+y2.
12x2+212x^2 + 212x2+2
4x3+2y4x^3 + 2y4x3+2y
12x212x^212x2
24x+224x + 224x+2