Suppose lim(z→z0) f(z) = C =/= 0. Prove that there exists δ > 0 such that |f(z)| > ½ |C| for 0 < |z − z0| < δ.
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?