Question

Find the second derivative of f(x)=x^2/(1+x) using product and quotient rules

Answer 1

Here is my work:
Can someone tell me where I went wrong?

Answer 2

@Kainui @mathmale

Answer 3

looks correct to me..

Answer 4

yeah it is

Answer 5

Checked your work, and then I put in wolfram, you got it right.

Answer 6

last step is to do f''(1)

Answer 7

which just makes f''(1) = 1/4

Answer 8

looks correct to me...

Answer 9

Ohh whoops. Typical, i forgot that I needed to plug in 1. Thank you though!!

Answer 10

btw your f''(x) is 100% correct.