Question

Hi, I'm stuck on a problem involving finding limits (in undefined form). Here's the problem:

lim delta x -->0 2(x + delta x) - 2x / delta x

Answer 1

x--> = to -4x2

Answer 2

Carry out the numerator (I'm assuming that is all part of the numerator, maybe I am wrong) and find it to be-->
2x + 2delta x - 2x = 2delta x so lim delta x--> 2delta x/delta x = 2

Answer 3

Yes you were right it was part of the numerator. Okay, thanks.