- #1
adriaat
- 10
- 0
Homework Statement
Find a power series for [itex]f(x) = \frac{1}{\sqrt{4+x^{2}}}[/itex], at [itex]x=0[/itex].
2. The attempt at a solution
I have looked up the Taylor series of [itex]\frac{1}{\sqrt{4+x^{2}}}[/itex], but I don't find any similarity with a power serie like [itex]\sum_{n\geq 0} a_{n} x^{n}[/itex]
I don't know how to start, anyone can lend me a hand?