Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions
familiar with integration by parts ?
yeah but i am not getting by that method i tried it. can u pl solve ?
Okay good



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

substitute t=\tan^{-1}(x)\implies dt=\frac{dx}{1+x^2} and we get
=\int t\sec(t)\tan(t)\,dt

Next integrate by parts letting
t=u and dv=\sec(t)\tan(t),
dt=du and v=\sec(t)

=t\sec(t)-\int \sec(t)\,dt

Plugging back t=\tan^{-1}(x) gives
2 5 2
ok got it
thats a good question, draw a right triangle based on t = tan^(-1)(x) and you will see that sect = sqrt(1+x^2)
can u solve my next q. ? i have exam tom
I'll try.. post..
posted .
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts