I just started calculus and we are doing limits. I was doing fine until I ran across this problem:(adsbygoogle = window.adsbygoogle || []).push({});

lim ( (x+∆x)^2 - x^2 ) / x

∆x approaches 0

I substituted delta x for a and ended up with 2x + a

I dont think this is right for some reason, but I think I did everything right, can someone please verify my answer so that I know Im on the right track? thanks!

**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!

# Homework Help: Limits help!

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