Question

How do you find the antiderivative of -3x/(x^2+1)

Answer 1

start with
\[-3\int \frac{xdx}{x^2+1}\] then a u sub gives it in one step
\[u=x^2+1, du = 2xdx,\frac{1}{2}du=xdx\]

Answer 2

oooh! i got 6ln(x^2+1)