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martins
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Integrate [(sin6x)/sinx] given that the limits are pi/3 and pi/6. Thanks
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Aitch
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(Original post by martins)
Integrate [(sin6x)/sinx] given that the limits are pi/3 and pi/6. Thanks
Try this:

Approached as a (quite tricky) reduction formula question:

http://www.thestudentroom.co.uk/showthread.php?t=101023

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Aitch
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(Original post by Aitch)
Try this:

Approached as a (quite tricky) reduction formula question:

http://www.thestudentroom.co.uk/showthread.php?t=101023

Aitch
It occurred to me that you need to decide if you can just quote the reduction formula and then put n=6. It depends what the rest of the question is, if you've not quoted the entire question.

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davros
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This is also part (e) of Question 5 on the 2001 AEA Specimen Paper.

If you can do parts (a) - (d) then that gives another strategy for attacking this question!!

It all depends on what you're allowed to quote, and whether you've picked a entire question or part of a multi-step one which guides you towards a method like the AEA paper...
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Aitch
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(Original post by davros)
This is also part (e) of Question 5 on the 2001 AEA Specimen Paper.

If you can do parts (a) - (d) then that gives another strategy for attacking this question!!

It all depends on what you're allowed to quote, and whether you've picked a entire question or part of a multi-step one which guides you towards a method like the AEA paper...

For P5 Edexcel, it (the reduction formula derivation) appears as Heinemann 3D Q12.

If you enjoy it so much that you need more, you can find

∫(cos nx)/(sin x) dx on Solomon P5 Paper H !

(Both followed by a "Hence evaluate..." of course.)

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