1 |
k+1 |
1 |
k+2 |
1 |
k+k |
當(dāng)n=k+1時(shí),左邊的代數(shù)式為
1 |
k+1+1 |
1 |
k+1+2 |
1 |
k+1+k |
1 |
k+1+(k+1) |
故用n=k+1時(shí)左邊的代數(shù)式減去n=k時(shí)左邊的代數(shù)式的結(jié)果,
1 |
(k+1)+k |
1 |
(k+1)+(k+1) |
1 |
k+1 |
即為不等式的左邊增加的項(xiàng).
故答案為:
1 |
(k+1)+k |
1 |
(k+1)+(k+1) |
1 |
k+1 |
1 |
n+1 |
1 |
n+2 |
1 |
n+n |
13 |
24 |
1 |
k+1 |
1 |
k+2 |
1 |
k+k |
1 |
k+1+1 |
1 |
k+1+2 |
1 |
k+1+k |
1 |
k+1+(k+1) |
1 |
(k+1)+k |
1 |
(k+1)+(k+1) |
1 |
k+1 |
1 |
(k+1)+k |
1 |
(k+1)+(k+1) |
1 |
k+1 |