see attached

Jl:2 +y2 Letf : R2 > R be defined as f(x, y) = (31 4 (a) Determine the domain and range of f. (b) Define the level curves of f and create a labeled contour plot showing at least four of these curves. (0) Sketch some typical crosssections x = constant. (d) Use your contour plot and typical crosssections to create a handdrawn graph of z = f (x, y)