WMA11 Jan 2019

1. WMA11/01 Edexcel IAL P1 January 2019, Q1 (Integration)

Find​​ 

∫23x3-12x3+5dx

simplifying your answer.​​ 

(4)

SOLUTION​​ 

Integrating the expression.​​ 

∫23x3-12x3+5dx=23∫x3dx-12∫x3dx+5∫dx

=23×x4 4-12×x-2-2+5x+c

=16x4+x-24+5x+c

=x46+14x2+5x+c