Integrate 2*(tan^-1(x))^2
From x= 0 to 1 need help

Question

Integrate 2*(tan^-1(x))^2
From x= 	0 to 1 	need help

anonymous · Answer

@hartnn -can u help with this one :)

anonymous · Answer

$$\int\limits_{0}^{1} 2(\tan ^{-1}x)^2 $$

anonymous · Answer

is it so?

anonymous · Answer

ok so first can u express the equation into simpler means?

anonymous · Answer

for example taking out the 2?

anonymous · Answer

$$[\int\limits] \arctan x (dx) = x \arctan x - (1/2) \ln(1+x2) + C$$

anonymous · Answer

integrate it now

kc_kennylau · Answer

kc_kennylau · Answer

Is the question even correct lol

School won't give you questions that hard

amoodarya · Answer

if u=arctan x 
then you have 
int (0 to pi/4) 2u^2 (1+tan^2 u )du

amoodarya · Answer

then answer is .490563

loser66 · Answer

attachment

anonymous · Answer

sorry question is wrong there was a mistake in the book it should be tan^-1(x^2)

anonymous · Answer

@Loser66-thanx for the help the minor misatke has made the question diffiuclt to solve it but u still did it :)

anonymous · Answer

@shakesworde- question was wrong :)

anonymous · Answer

@kc-kennylau-lol yeah school don't give hard questions :)

anonymous · Answer

@kc_kennylau *