how to solve this integral

dt/(cost)^3

?

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- April 15th 2011, 01:06 AMtransgalactictrigonometric integral
how to solve this integral

dt/(cost)^3

? - April 15th 2011, 01:12 AMmr fantastic
See here: integrate 1/(Cos[x])^3 - Wolfram|Alpha

Click on Show steps. The reduction formula can be found using integration by parts. - April 15th 2011, 01:24 AMtransgalactic
how to solve it by parts??

what parts

? - April 15th 2011, 01:28 AMmr fantastic
- April 15th 2011, 01:43 AMtransgalactic
yes i hav been taught but i cant see how to apply it here

so it will be effective - April 15th 2011, 02:01 AMmr fantastic