Find ∫ x^2(ln(4x))dx

 ∫xln(4x)dx

Firstly , identify this question as integration by parts. Therefore set one half as value 'u' and one as value 'dv'.

Here we will set u = ln(4x).

Therefore: du/dx = 1/4x . (4)        

                       du = 1/x dx                 We then set dv = x2 dx                                                          

                                                                          dv/dx = x2                                                              

                                                                                v = x3/3

The formula for integration by parts is :

u.v -  ∫v.du

= ln(4x).(x3) -  ∫(x3/3)(1/x)dx

= x3ln(4x) - ∫(x2/3)dx

= x3ln(4x) - x3/9 + c

Answered by Sally F. Maths tutor

10147 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

what is implicit differentiation and how is it achieved?


Differentiate ln(x)/x


how do I differentiate?


The random variable J has a Poisson distribution with mean 4. Find P(J>2)


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