theind1996
Active Member
Re: ITT we help examine to get 85 in his Maths extension 1 yearlies so he can do 4 un
Although I know that Realise has a better method - I think it's called the boundary method.
You can find the discontinuity (what values x cannot equal), and the the equality (if the inequality sign is actually equal - what solutions you would get by solving it), and then test points on either side.Probably a rookie concept, though I guess that's why I'm asking it just to confirm.
For inequalities, do you have to square both sides, or is there an alternative way (I think there is, though I don't fulply remember it - I think it is where you just multiply it though you have two cases.
Although I know that Realise has a better method - I think it's called the boundary method.