- #1

Refraction

- 21

- 0

## Homework Statement

For f(x) = xln(x), find the taylor series expansion of f(x) about x = 1, and write the infinite series in compact form.

**2. The attempt at a solution**

I can find the expansion itself fine, these are the first few terms:

[tex]0 + (x-1) + \frac{(x-1)^{2}}{2!} - \frac{(x-1)^{3}}{3!} + \frac{2(x-1)^{4}}{4!} - \frac{6(x-1)^{5}}{5!} + \frac{24(x-1)^{6}}{6!}[/tex]

but I'm having trouble finding a pattern for the nth term (and I can't write it in compact form without that). f(1) and the first 7 derivatives of f(x) at x = 1 end up being 0, 1, 1, -1, 2, -6, 24, and it's mainly that part that seems to make finding it a problem.