How do you determine when f is differentiably from a real analysis standpoint (no graphs and calculus)? Would I simply look for a point of discontinuity? We have 4 problems on our homework assignment involving this issue and I don't see one example in my notes or the book adressing it. Here is one of our problems incase your wondering:(adsbygoogle = window.adsbygoogle || []).push({});

Determine the values of x for which f(x) is differentiable and find it's derivative:

f(x) = x|x|

Thanks

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

Dismiss Notice

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!

# Determine when f is differentiable

Loading...

Similar Threads for Determine differentiable | Date |
---|---|

I Determining the limits of x | Dec 11, 2016 |

A Evaluation of functional determinants | Nov 4, 2016 |

I Determining the flux of an arbitrary vector function | Oct 23, 2016 |

Matrix determinants and differentiation | Sep 17, 2009 |

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