Question

evaluate each integral (cos2x) / (1+sin2x) dx

Answer 1

u=1+sin2x
\[du=2\cos2x dx\]

Answer 2

\[1/2 \int\limits_{}^{} \frac{1}{u}du =1/2 \ln(u)+C =1/2 \ln(1+\sin2x)+C\]

Answer 3

i think it is necessary here to insert | | instead of ( )

Answer 4

but great job john