Question

I am not sure, I think it doesn't look right.

Answer 1

(x^2+2x+1) ' = (x+1)^2 ' = 2x+2

did I derive correctly?

Answer 2

yes

Answer 3

I basically said let x+1 = a, but I was confused, ty for your clarification.

Answer 4

by the way, did you know you can check such things quickly at wolframalpha?

Answer 5

http://www.wolframalpha.com/input/?i=%28x%5E2%2B2x%2B1%29+%27

Answer 6

Yeah, but I don't know how to put up a question about derivative in there.

Answer 7

I see.

Answer 8

Wolfram is pretty good at guessing what you mean. You can either write dy/dx or you can write it like you did here.

Answer 9

I don't mind asnwering math questions, but sometimes it's just quicker to look it up that way, you won't need to wait for someone to be around to answer you :)

Answer 10

yeah, it's definitely a good site, ty for your help!