Let f(x)= ln (1+x^2). Find f^15(0)

I know the answer is 0 but why?

- May 14th 2009, 12:22 PMtwilightstrFind the sum of the series and determine the radius and interval of convergence
Let f(x)= ln (1+x^2). Find f^15(0)

I know the answer is 0 but why? - May 14th 2009, 12:35 PMMoo