How can we prove 1 = 2 ?
How do I prove that -LSB- 1 + -LRB- k +1 -RRB- / -LRB- 1 ! * 2 -RRB- + -LRB- k +1 -RRB- -LRB- k +2 -RRB- / -LRB- 2 ! * 2 ^ 2 -RRB- + ... -RSB- is -LRB- 1/2 -RRB- ^ - -LRB- k +1 -RRB- ?