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Originally Posted by foodmmm Let Substitute.
Pull out the 3 (because it's a constant and you can do that ), and then try u-substitution with u being (2x + 1)
Last edited by mr fantastic; Apr 13th 2009 at 08:11 PM. Reason: No edit - flagging post as having been moved from a thread with duplicate question
Originally Posted by foodmmm Notice that this is . You would solve this using a u-substitution. Let so that So the integral becomes .
thank you. is there any way to do it without substitution? i don't think we are supposed to use it.
Originally Posted by foodmmm thank you. is there any way to do it without substitution? i don't think we are supposed to use it. Yes. Know that , (where I have omitted the arbitrary constant).
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