Turn on thread page Beta
    • Thread Starter
    Offline

    10
    ReputationRep:
    How to integrate tan(x) /cos^2(x)?
    • Very Important Poster
    Offline

    21
    ReputationRep:
    Very Important Poster
    (Original post by CelaenSardothien)
    How to integrate tan(x) /cos^2(x)?
    Asked for your thread to be moved to Maths


    You'd be interested in recognition and tan^2x
    • Community Assistant
    • Study Helper
    Offline

    20
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by CelaenSardothien)
    How to integrate tan(x) /cos^2(x)?
    = tan(x)sec^2(x).

    Notice that sec^2(x) is the derivative of tan(x). Does that help?
    Offline

    16
    ReputationRep:
    Use the identity tanx=sinx/cosx and use the u substitution u=cosx
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    14
    ReputationRep:
    (Original post by Notnek)
    = tan(x)sec^2(x).

    Notice that sec^2(x) is the derivative of tan(x). Does that help?
    Or alternatively notice that \sec{x}\tan{x} is the derivative of \sec{x}. Which gives a different looking answer but it's only different by a constant. (Just putting this out there in case any confusion arises.)
 
 
 

University open days

  • Heriot-Watt University
    School of Textiles and Design Undergraduate
    Fri, 16 Nov '18
  • University of Roehampton
    All departments Undergraduate
    Sat, 17 Nov '18
  • Edge Hill University
    Faculty of Health and Social Care Undergraduate
    Sat, 17 Nov '18
Poll
Black Friday: Yay or Nay?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Equations

Best calculators for A level Maths

Tips on which model to get

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.