3 It is a true fact that lim 1. I-+2 5x - 7 The e-6 proof for this limit given below contains a significant flaw in its reasoning. Find and explain the flaw, and then write a correct s-6 proof for this limit. Incorrect proof: Let = > 0 be an arbitrary positive number, and let 5 = min (1, ge}. Let x be a real number, and assume that 0