ok...this was meant to be a fun problem :grumpy: but looks like I don't deserve to have fun!!!(adsbygoogle = window.adsbygoogle || []).push({});

How am I meant to derive trig identities like sin(x)cos^3(x) from some complex **** like [tex]\left( {e}^{{\it ix}} \right) ^{n}={e}^{{\it ixn}}[/tex]!!! I just don't get the idea!!!

**Physics Forums - The Fusion of Science and Community**

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!

# (e^ix)^n=(e^ixn) & Trig identities

Loading...

Similar Threads for e^ix e^ixn Trig | Date |
---|---|

I Integral e^(ikx^3) | Dec 5, 2017 |

B A function such that f(x)=f'(x)? (not e^x) | Sep 19, 2017 |

I Try to solve 10=(e^x)/x | Nov 30, 2016 |

B Why differential of e^x is special? | Nov 5, 2016 |

B Length of the graph of e^x | Nov 5, 2016 |

**Physics Forums - The Fusion of Science and Community**