WMA11 Jan 2023

• WMA11/01 (Edexcel) IAL P1 January 2023, Q3, Integration

Find

∫4x2 +3  2x²dx

giving your answer in simplest form.

(5)

SOLUTION

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

On integrating,​​ 

∫4x2 +3  2x2dx=∫4x52x2+32x2dx

=∫(2x3+32 x-2).dx

=∫2x3.dx+∫32x2.dx

=2x44+32x-1+c

∫4x2 +3  2x2dx=12x4-32x+C