Read the following proof and determine what the author is attempting to prove. Identify and correct the logical error in the argument. Proof: Suppose that (2i-1)= k for some k Z+. Now consider the sum (2-1). We k+1 can separate the last term, which gives us i=1 (2i-1)=(2i-1)+2k +1. By hypothesis, k+1 k+1 this is equal to k + 2k +1. Factoring, this is equal to (k+ 1). Hence (2-1) = (k+1). im1