for a 2nd question:
\intsin^7xcos^3xdx
i worked it down to the following using reduction eqn and also substitution:
= - cos^4x/40 -1/10 sin^6xcos^4x - 3/40 sin^4xcos^4x - 1/20sin^2xcos^4x + c
should I simplify this further and where should i begin if i do?
I am currently working on revision and the following question came up:
Find the integral of:
\int x^2 \sqrt{x-5}dx
now the way I went about solving this was to let u = x-5 and du = dx so that for the first step i got:
\int x^2 U^1/2 du. I felt wrong right from the get go and had a look at...