Let (X,d) and (Y,p) be metric spaces, and assume Y is complete. Let f: X→Y and x∈X.

Show that f has a limit at x if and only if given any ε>0 there exists δ>0 such that whenever y, z ∈B_δ(x)＼｛x｝,p(f(y),f(z)) < ε.

can anyone please help me to solve this question??? ,,,