Question

Inflection points: Finding the zeros in the second derivative of the function.

Answer 1

Should I factor it first?

Answer 2

yup

Answer 3

The second derivative?

Answer 4

yup

Answer 5

okay just one minute.

Answer 6

hold on, but I don't think your second derivative is correct

Answer 7

http://www.wolframalpha.com/input/?i=%28x^2%2F%28x^4%2B1%29%29%27%27

Answer 8

Is that the second derivative?

Answer 9

That you put in on that site?

Answer 10

yes. but for you, it is for checking only. You should know how to get the answer by hand, then compare to it to figure out the mistake. Me too.
But to help others, we work on the right answer by doing that. If I base on your wrong answer, both us fail, right?

Answer 11

right.