For each n = 1,2,3, define fn(x)x(1- t), for every e (-1,1]. let f : r2-r be defined by f(2, y)) = x2e 2 2y, for every (x, y) e r2. then the function fdefined by f(x): = lim fn(x) f(0,0)) + fm (0,0)) is: the value of f((0,0)) + noo exists for each x e [-1,1] and is equal to select one: select one: undefined f(x) 0 a = 1 -2 o 0 f(x)= 0 o a