Definite Integration Integration is the reverse of differentiation. It can be used to calculate the area between the curve of a function and the axis. In definite integration you don’t need the constant (+c) as it would be cancelled out anyway in the subtraction.
( )
∫
Limits: b is upper a is lower
[ ( )] The integrated equation
( ) Limits
( ) Substitute b as x
Substitute a as x
Example:
Some useful websites: http://www.mathsrevision.net/al evel/pages.php?page=18 http://www.examsolutions.co.uk/ A-Level-mathstutorials/Edexcel/C2/integration/r evision-guide.php