What's this function?

Geometry Level 4

\[\large \displaystyle \sum^{n}_{r=0} {^{n}C_{r} \sin(rx) \cos((n-r)x)=f(n)\sin(nx)}\]

Let \(f(n)\) denote a function such that the equation above is an identity.

Find the value of \(f(15)\).

×

Problem Loading...

Note Loading...

Set Loading...