Question

how this came??????? ​

Answer 1

Answer:

we need to take k+1 at the place of k for proving the question....

first we need to prove using n......

first take it as k- 1 and then k+1 at the place of k...

u will get (k+1)-1= k

r u in 11 class..

I had done this chapter....

I had understood it's concepts