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FP3

http://mathsathawthorn.pbworks.com/f/FP3+2008.pdf
In 6bii? Okay so ive shown the equation they have gave ,what do i do next?

Reply 1

130398

Integrate it. Put the cos(theta) into the dx and integrate with respect to sin(x) giving you sin(x) to the power of 5 divided by 5. Put in limits and multiply by 6pi

Reply 2

Lychee628

Original post by 130398

Integrate it. Put the cos(theta) into the dx and integrate with respect to sin(x) giving you sin(x) to the power of 5 divided by 5. Put in limits and multiply by 6pi

https://www.youtube.com/watch?v=_prwq0vxhMQ&index=4&list=PL6bHsS8LZT3NBvz8CD47dwdx20UbChE24
Okay so at 14.18 they have put as u=sintheta? How am i supposed to know that?

Reply 3

130398

Original post by Ayaz789

https://www.youtube.com/watch?v=_prwq0vxhMQ&index=4&list=PL6bHsS8LZT3NBvz8CD47dwdx20UbChE24
Okay so at 14.18 they have put as u=sintheta? How am i supposed to know that?

It's a common c4 integral really. Use udv dv du or whatever it was. If you're doing FP3 you may be asked to use a substitution of your choice. That was popular in older papers but the newer ones (Edexcel at least) don't do it as much.