Hello, the following fraction is the derivative of a function:(adsbygoogle = window.adsbygoogle || []).push({});

(160-40t^2) / (t^2+4)^2

According to my textbook they have established the inflection points by equating the top line of this derived fraction to zero and then solving for x e.g. 160-40t^2 = 0. (t=+-2).

I was wondering is it a rule that you can simply equate the top line of a fraction format derivative to zero or am I missing something particular to this equation ?

Thanks for any clarification.

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

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!

# Establishing inflection point

Loading...

Similar Threads for Establishing inflection point |
---|

I Integrate a function over a closed circle-like contour around an arbitrary point on a torus |

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