Question: Consider the function: z = f(x, y) = xy/(e + y). i. Find the domain and range of f. ii. Assume x(s, t) =

Consider the function: z = f(x, y) = xy/(e + y). i. Find the domain and range of f. ii. Assume x(s, t) = t+s and y(s, t) = ts. Use the Chain Rule to calcu- late z/t and z/Os. You will get no marks if you substitute (s, t) and y(s, t) into f(x, y) and then differentiate the resulting composite function.

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