Let us take the first three non-zero terms of Maclaurin's expansion of(adsbygoogle = window.adsbygoogle || []).push({});

f(x)= Asen(ax) + Bcos(ax).

Determine for which values of a the equation f ' '(x) + f(x) = 0.

**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!

# Homework Help: Maclaurin Serie

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