Let f be a function satisfying f'(x) = -3xf(x), f(1) = 4 and lim x->infinity f(x) = 0.(adsbygoogle = window.adsbygoogle || []).push({});

Evaluate integral of -3x*f(x)*dx between 1 and infinity.

Does this have to do with using comparison properties or something? I really don't know where to start. Thanks for any help.

**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!

# Don't know how to approach this one

Loading...

Similar Threads for Don't approach | Date |
---|---|

Confusion about the "now-you-see-me-now-you-don't" radian | Mar 25, 2018 |

B Don't follow one small step in proof | Jun 10, 2017 |

I Fourier Series: I don't understand where I am wrong -- please help | Jun 16, 2016 |

I don't know yet how to integrate this function... | Sep 29, 2015 |

Don't understand convergence as n approaches infinity | Oct 11, 2012 |

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