C3 Integration Watch

Stex Bomb
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#1
Report Thread starter 9 years ago
#1
Integrate this and tell me what you get please



Its a solids of revolution question.

Apparently it integrates to the answer in red ( in the mark scheme. (Click Spoiler)

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Where does the -3e^-2x come from?
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sonofdot
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#2
Report 9 years ago
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You have to integrate 12xe^{-2x} by parts :smile:
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Daniel Freedman
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#3
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12xe^(-2x) has to be integrated by parts.
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little_wizard123
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#4
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#4
You need to integrate by parts!
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Stex Bomb
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#5
Report Thread starter 9 years ago
#5
P.S. Ignore the rest of it.. I wrote 12 instead of 6..
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Stex Bomb
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#6
Report Thread starter 9 years ago
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(Original post by sonofdot)
You have to integrate 12xe^{-2x} by parts :smile:
Ahhhhhh...
cheers all

No wonder it is the last question on the mock with so many marks!

Thanks!
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