If is given that N is an integer.Prove that (a) 3(2N-1)+1 is an even number.

题目

If is given that N is an integer.Prove that (a) 3(2N-1)+1 is an even number.

答案

on9仔等我答你,3(2N-1)+1既解咪系3(2N-1)+1既答案LO SB~!