binomial expansion (1 Viewer)

[Hello_World2]

I've done part a, but I am not sure how to use it to get parts b and c. Help would be appreciated, thanks!

 

[cossine]

I've done part a, but I am not sure how to use it to get parts b and c. Help would be appreciated, thanks!
View attachment 36477

Try mathematical induction.

 

[Hamburgler]

Consider expansion of

 

[Hamburgler]

As for part C consider integrating both sides in

And letting x=-1