Find the average rate of change from 1 to 2 for the function f(x)=2x^3 + x(adsbygoogle = window.adsbygoogle || []).push({});

so I did this:

[f(2) – f(1)] – [2x^3 + x] / 2-1

= 2-1-2x^3 + x / 1

= 1-2x^3 + x

= -2x^3 + x

Right?

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

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!

# Homework Help: Rate of change from 1 to 2 for f(x)=2x^3 + x

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