I have a Calculus Assignment on Power Series and I am very lost and confused. One of my questions looks like this:

f(x) = 7xln(6+x)

f(x)= $\displaystyle CnX^n$

Find:

C1=

C2=

C3=

C4=

and R(radius of convergence)=

If anyone can help me out that would be great!