Thursday, 16 July 2015

calculus - Proof that nchooser always yields a natural number proof by induction

(https://i.stack.imgur.com/vfy4d.jpg)
Hi I'm trying to prove that the (nr) formula gives a natural number by using proof by induction and I'm stuck on the last stage (in the picture above). Have I messed up earlier on and if not then how can I show that n+1nr+1 is a natural number. I know there are other articles but I can't seem to find an answer to this.
Cheers

No comments:

Post a Comment

real analysis - How to find limhrightarrow0fracsin(ha)h

How to find limh0sin(ha)h without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...