Integration of Surds and Negative Indices

To integrate surds (roots) and expressions with variables in the denominators, the same rule is used as for the integration of polynomials.

Before integration the terms must be written in index form.

Term
Index form
3√x
Y12_Integration_of_Surds_and_Negative_Indices_01.gif
Y12_Integration_of_Surds_and_Negative_Indices_02.gif
6x-2

The terms can then be integrated using:

 axn dx =aY12_Integration_of_Surds_and_Negative_Indices_03.gif + c

This means that a coefficient remains unchanged by integration.

 
Examples
Answers
1 Find  3√x dx Y12_Integration_of_Surds_and_Negative_Indices_04.gif
2 Find  Y12_Integration_of_Surds_and_Negative_Indices_05.gifdx Y12_Integration_of_Surds_and_Negative_Indices_06.gif
3 Y12_Integration_of_Surds_and_Negative_Indices_07.gif Y12_Integration_of_Surds_and_Negative_Indices_08.gif
4 Find Y12_Integration_of_Surds_and_Negative_Indices_09.gif Y12_Integration_of_Surds_and_Negative_Indices_10.gif