[tex] \frac {d} {dt} \int_{a}^{b} f(x,t) dx = \int_{a}^{b} \frac {\delta} {\delta t} f(x,t) dx [/tex](adsbygoogle = window.adsbygoogle || []).push({});

From trial and error, it seems true but I can't find it in my textbook anywhere. Am I missing something obvious?

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

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

# Is there a theorem that says

Loading...

Similar Threads - theorem says | Date |
---|---|

I What is stokes and greens theorem and expression of? | 52 minutes ago |

B Some help understanding integrals and calculus in general | May 22, 2017 |

I Noether's theorem | Feb 26, 2017 |

I Proofs of Stokes Theorem without Differential Forms | Jan 24, 2017 |

Theorem that says partial and ordinary derivatives are mixed? | Sep 26, 2009 |

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