Hi, how would you know when to use partial fractions?
E.g. I was integrating and came across 1/(x)(2-x)
anyone know how and when to use partial fractions?
C4 Maths partial fractions help Watch
- Thread Starter
- 18-04-2016 21:34
- Community Assistant
- 19-04-2016 08:53
Hello, I've moved this to maths for you.
When you look at integrals, you need to think about what methods you could use eg:
Inverse chain rule? No it's not in the right form (because we have x^2).
etc and then you'll come to partial fractions and think, "aha that's the right method!"
When I was doing c4 integration, my teacher give us a list of the different types of integrals and what techniques you'd use. Maybe you'd find making one of those useful?
- 19-04-2016 09:54
Basically if you have to factors that are multiplied on the denominator, it's probably best to use partial fractions.
Sometimes there will be a polynomial on the denominator which can be factorised into 2 linear factors. This allows you to integrate when there is a long expression on the denominator. Also though you can use partial fractions for integrating something like