Ask iit jee aieee pet cbse icse state board community Discussion Response Post to: integral calculus solution
Forum Index -> Integral Calculus -> View Full Question Email  
Author Message
Vishal U. Karve (205)

Hot goIITian

Vishal U. Karve's Avatar

total posts: 147    

put cot x=t2.

-cosec2x dx = 2 t dt

-(1+t4)=2t dt

The integral becomes

Write -2t2 as (1-t2) - (1+t2)

You get 2 integrals.

Divide by t2 in both numerator and denominator. The 2 integrals become

(Ignore the box in the second integral)

Now in the first integral put t + 1/t  =u.

In second integral put  t - 1/t = v.

Hope you can do the rest..

Knowledge is power.
3 people liked this
Free Sign Up!
Sponsored Ads

Preparing for JEE?

Kickstart your preparation with new improved study material - Books & Online Test Series for JEE 2014/ 2015

@ INR 5,443/-

For Quick Info