Question 1 A function of two variables (x, y) is given as: (a) (b) (c) f(x, y) = = x³ +y³ x³+y³ +1-1 Determine the existence of lim f(x, y). If exist, evaluate it. (x,y)-(1,1) Determine the existence of lim f(x,y). If exist, evaluate it. If there is a definition at point (0,0), f(x, y) = m. Find the value of m to make the function f(x, y) is continuous at point (0,0).

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