how to solve this integral

dt/(cost)^3

?

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- Apr 15th 2011, 12:06 AMtransgalactictrigonometric integral
how to solve this integral

dt/(cost)^3

? - Apr 15th 2011, 12:12 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. - Apr 15th 2011, 12:24 AMtransgalactic
how to solve it by parts??

what parts

? - Apr 15th 2011, 12:28 AMmr fantastic
- Apr 15th 2011, 12:43 AMtransgalactic
yes i hav been taught but i cant see how to apply it here

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