Can anyone help me with this? It's been really annoying me and I think I am just forgetting something:(adsbygoogle = window.adsbygoogle || []).push({});

Using the series expansion for cosx in powers of x find the first four non-zero terms of the corresponding series for sec x.

I get obviously that as secx is 1/cosx it is a case of division of power series but I get confused because it is 1/a power series rather than a power series/a power series so I'm not sure how to treat this.

I would really appreciate help.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Power series help

Loading...

Similar Threads for Power series help |
---|

I Divergent series question |

B Need some help with understanding linear approximations |

I Help with simplifying series of hyperbolic integrals |

I Taylor series |

**Physics Forums | Science Articles, Homework Help, Discussion**