1. The problem statement, all variables and given/known data sqrt(1+x^4) use the binomial series to find the maclaurin series for the above function. then use that to find the 15th derivative at 0. 2. Relevant equations -binomial series 3. The attempt at a solution I've gotten to: [tex]\Sigma[/tex] (k n) (x^(4n)) from n=0 to infinity How can i use this to find derivatives?