Find a power series representation

Answer 1

To find a power series representation of a function, you typically express it in the form ( f(x) = \sum_{n=0}^{\infty} a_n (x - c)^n ), where ( c ) is the center of the series and ( a_n ) are the coefficients determined by the function's derivatives at that point. A common approach is to use Taylor series, where ( a_n = \frac{f^{(n)}(c)}{n!} ). For example, the power series for ( e^x ) centered at ( c = 0 ) is ( \sum_{n=0}^{\infty} \frac{x^n}{n!} ).