- #1
RadiationX
- 256
- 0
find the radius and interval of convergence of:
[tex]\sum_{n=1}^\infty\frac{(-1)^{(n+1)}nx^n}{2^n}[/tex]
the radius is [tex]x<2[/tex]
and the interval is [-2,2)
are these two answers correct?
[tex]\sum_{n=1}^\infty\frac{(-1)^{(n+1)}nx^n}{2^n}[/tex]
the radius is [tex]x<2[/tex]
and the interval is [-2,2)
are these two answers correct?