Answers>Maths>IB>Article

When integrating by parts, how do I decide which part of the integrand is u or f(x) and which dv or g'(x)?

Integration by parts is not only a very useful techinque for integrating, but it is also one of the techinques that appears more in the IB Mathematics exams. The most important step is to choose the part of the integrand that works better for u or f(x), as a right choice will save you a lot of time (and time is everything in the IB!). Whenever you are in doubt, choose u or f(x) to be the following:

  1. The LOgarithm. If there is none,
  2. The ROot. If there is none,
  3. The POlynomial. If there is none,
  4. The Trigonometric function. If there is none,
  5. The Exponential function. To remember this rule, think about the sentence "LOve ROasted POtatoes Till the End", and its initials will tell you the order of the functions you need to look for to be u or f(x)!!
XB
Answered by Xell B. Maths tutor

2063 Views

See similar Maths IB tutors

Related Maths IB answers

All answers ▸

Find the Cartesian equation of plane Π containing the points A(6 , 2 , 1) and B(3, -1, 1) and perpendicular to the plane Π2 (x + 2y - z - 6 = 0).


How does Euclid's algorithm give solutions to equations?


A geometric sequence has all its terms positive. The first term is 7 and the third term is 28.


When the polynomial 3x^3 +ax+ b is divided by x−2 , the remainder is 2, and when divided by x +1 , it is 5. Find the value of a and the value of b.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences