Oct/07

A-Math Integration of tan^2 x

1 Comment | Posted by alwaysLovely in A-Math

Another question from O Level Additional Mathematics (A-Math).

lijun(: said…
i came across this qu that day, and i really want to clarify if the method i used is correct or not.int(tan^2x – x^3)

i changed it to int(sec^2x – 1 – x^3) instead, cos i don’t think we can integrate tan.

is that feasible?

Absolutely. Since tan^2 x can’t be integrated, you must think of alternative by making use of the relationship of tan^2 x + 1 = sec^2 x

1 Comment for A-Math Integration of tan^2 x

LinwooD | October 3, 2007 at 1:06 am

yes, it’s feasible. we dont learn how to integrate tan so we have to change it to sec^2x – 1. great attempt :)