Topic: indirect proof
One item is filed under this topic.
1)by mathematical induction prove that 12 + 32 + 52 + ...... + (2k-1)2 = (1/3)k(2k-1)(2k+1) for all positive integers k.
2)show that the contrapositive of the following statement is true. if 1 + M7 is even, then M is odd.
