/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 43 Use integration formulas to solv... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Use integration formulas to solve each integral in Exercises 21–62. You may have to use algebra, educated guess-and-check, and/or recognize an integrand as the result of a product, quotient, or chain rule calculation. Check each of your answers by differentiating.

∫2x1+x2dx

Short Answer

Expert verified

The solution of the integral isln1+x2+C.

Step by step solution

01

Step 1. Given Information.  

The given integral is∫2x1+x2dx.

02

Step 2. Solve. 

By solving the integral we get,

∫2x1+x2dx=2∫x1+x2dxLetu=1+x2,du=2xdx=2∫duu12=212∫duu=lnu+CSubstituebacku=1+x2=ln1+x2+C

03

Step 3. Verification. 

To verify the answer we differentiate ln1+x2+Cit.

On differentiating we get,

ln1+x2+C=ddxln1+x2+ddxC=11+x2ddxx2+0=2x1+x2

Hence proved.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Study anywhere. Anytime. Across all devices.