Search over 10,000 free study notes

We can't integrate cos^2(x) as it is, so we want to change it into another form. We can easily do this using trig identities . 1) Recall the double angle formula: cos(2x) = cos^2(x) - sin^2(x). 2) We also kn...

Remember the uproar on Twitter about an Edexcel GCSE Maths paper, sparking the #EdexcelMaths trend on Twitter? Whether you do or don't, the question that caused the controversy is within the GCSE syllabus an...

Before starting any calculations it makes sense for the new practitioner to use the handy "soh-cah-toa" rule which means that you use: - sine with the opposite and hypotenuse sides to the angle. -c...

If you are given an equation with brackets, one way to solve it is to multiply out the brackets. Follow the example below: Solve the equation: 2(a + 5) = 16 1. Multiply out the brackets and remember that eve...

There's a nice trick here you can do, treat the equation as 1*ln(x) then intergrate by parts. Differentiating ln(x) gives 1/x, while intergrating 1 gives x So your left with a much easier intergration x ln(x...