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# C3 help urgent!

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1. Can some1 please show me how to do question 4b.
http://store.aqa.org.uk/qual/gceasa/...W-QP-JAN07.PDF

I can do simple substitution but not the harder ones .
If you could show me all the steps that you did to get the answer, that would be great.
2. (Original post by bahjat93)
Can some1 please show me how to do question 4b.
http://store.aqa.org.uk/qual/gceasa/...W-QP-JAN07.PDF

I can do simple substitution but not the harder ones .
If you could show me all the steps that you did to get the answer, that would be great.
It isn't a harder one!

Differentiate,
This gives,

The integral becomes,

Now its simple to finish it off.
3. (Original post by raheem94)
It isn't a harder one!

Differentiate,
This gives,

The integral becomes,

Now its simple to finish it off.
I don't get maths but i see what you did, LOOOL cheers dude much appreciated

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