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\f(5) Suppose w = 2ry +e' cos(x) +ry z and x = 2s' + 1, y = t' + s, and = = te*. (a) Construct a tree to detail the relationships of the variables. (b) Calculate 26 and Ow(3) Use Polar Coordinates to evaluate the following limit. sin x2 + y' lim (x.y)-+(0.0) /x2 + yz(2) Find the limit (if it exists). If it does not exist, explain. lim I-y-1 (x.y) +(2,1) I-y-1(1) For the function f(x, y) = V1 -612 +12 complete the following. (a) Determine the domain and range of f. (b) Determine the points (r, y) for which f is continuous. (c) Calculate fr(r, y) and fy(r, y)