Solving Algebraic Equations: Need Help?

[bon]

Homework Statement

Please see attached

Homework Equations

The Attempt at a Solution

Not sure how to begin actually...

I've tried taking logs of both sides and using sterling's approximation but it came to nothing... :(

Any ideas? Thanksss

 

[bon]

any ideas anyone?

 

[Dick]

They are using things like (N/2+m)!/(N/2)!=(N/2+m)*(N/2+(m-1))*...*(N/2+1). Expand the right side keeping only the two highest powers of N/2. You get (N/2)^m+(m+(m-1)+...+2+1)*(N/2)^(m-1).