WMA11 Jan 2022

1. WMA11/01 Edexcel IAL P1 January 2022, Q1 (Integration)

Find​​ 

∫8x35-23x4-1dx

giving each term in simplest form.​​ 

(4)

SOLUTION

When integrating a polynomial function, you can integrate the terms​​ one at a time.

On integrating,​​ 

∫85x3-23x-4-1dx

=85×x44-23×x-3-3-x+c

=25x4+29x-3-x+c 

=25x4+29x3-x+c