## sat_chen 2 years ago integral from (0 to pi/2 ) tanx^2dx

1. goformit100

|dw:1362005415011:dw|

2. sat_chen

yes thats the problem

3. sat_chen

the problem shows like this |dw:1361989238472:dw|

4. sat_chen

you cant use u substituion either

5. sat_chen

i believe

6. SithsAndGiggles

$\int_0^{\frac{\pi}{2}}\tan^2x\;dx?$ If so, use the identity $1+\tan^2x=\sec^2x$

7. sat_chen

i believe you can do this by trying the trig substituion from which the answer becames it diverges is that right