Taylor series of 1/sqrt(cosx)

1. Oct 8, 2005

ascky

Is there a way to get the Taylor series of 1/sqrt(cosx), without using the direct f(x)=f(0)+xf'(0)+(x^2/2!)f''(0)+(x^3/3!)f'''(0)... form, just by manipulating it if you already know the series for cosx?

2. Oct 8, 2005

ascky

nvm.. I got it (yay)