thanks very much. Out of curiosity, is that the normal method of solving a question like that? Expand it then integrate as usual? What happens with higher powers? Is there a rule I should know about?
thanks very much. Out of curiosity, is that the normal method of solving a question like that? Expand it then integrate as usual? What happens with higher powers? Is there a rule I should know about?
Well, with higher powers you can use the binomial theorem, but it's likely not to give you a nice form.
Otherwise, see if you can have something in the form which has the following antiderivative :
I'm back, how do I integrate (x^2+2)^2? I need to integrate this to find the volume of a solid.
It probably would be better if you posted the whole question and then showed your working up to this stage (just in case this is the wrong integral).
Last edited by mr fantastic; January 23rd 2009 at 02:56 AM.
Reason: Moved from a double post. Kept the first bit. Deleted the bit already given by moo.