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 :