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Re: O'level Maths, Addmaths and Statistics help available he
its functions !! very easy but lengthy question !!
its functions !! very easy but lengthy question !!
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Don't worry mate ! e.c.f will aid you in such an event provided that you follow through the rest of the questions in an appropriate manner even though you used incorrect results from a previous part of the question in your calculations.leosco1995 said:I am just confused with part (a) in Q8.. otherwise the rest of the question isn't that difficult (but if part a = wrong, then the entire question goes wrong). Also, many questions are of like 2 or 3 marks but involve a lot of working.
yeah I did the same !! but answer is coming wrong !!hamidali391 said:Where will you substitute the value of x? You have to substitute the function F(x) in place of the x of g(x). And so you need an expression such as ax²+bx+c to solve this question. g(2x-1)=a(2x-1)²-b(2x-1)+5=12x²-12x+5
I don't see another method to solve this question.
Actually, this method does work. It just never occurred to me when I was giving the paper. :sbtw if we use function method then g(2x-1)=12x^2 - 12x + 5
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