Integrate (2x)/(x^2 + 1)
The Attempt at a Solution
Is the answer:
(2x) log|x^2 + 1|
as I thought the answer to this type of question is the log of the absolute value of the denominator multiplied by the numerator.
The answer given when I use Wolfram Alpha is log(x^2+1) + (tan x)^-1