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Author Topic: Maths C3 Help Please, this function stuff is killing me!  (Read 1215 times)

Offline zizo47

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Maths C3 Help Please, this function stuff is killing me!
« on: June 01, 2009, 10:43:42 pm »
Heres a link to a picture of the question and also the answer. Its not my answer, its whats written in the marking scheme, but I have no idea what the link is between the question and answer, or the steps taken to get the answer. Any help would very much appreciated...

Question:
http://i43.tinypic.com/14oc755.jpg

Answer:
http://i40.tinypic.com/296d91u.jpg
« Last Edit: June 01, 2009, 10:52:14 pm by zizo47 »
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Offline astarmathsandphysics

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Re: Maths C3 Help Please, this function stuff is killing me!
« Reply #1 on: June 02, 2009, 07:52:55 am »
Quote from: zizo47 on June 01, 2009, 10:43:42 pm
Heres a link to a picture of the question and also the answer. Its not my answer, its whats written in the marking scheme, but I have no idea what the link is between the question and answer, or the steps taken to get the answer. Any help would very much appreciated...

Question:
http://i43.tinypic.com/14oc755.jpg

Answer:
http://i40.tinypic.com/296d91u.jpg

f(x)=\frac{2(x-1)}{(x-3)(x+1)}-\frac{1}{x-3}=\frac{1}{x-3}[\frac{2(x-1)}{x+1}-1]=\frac{1}{x-3}[\frac{2x-2-x-1}{x+1}]=\frac{1}{x-3}[\frac{x-3}{x+1}]=\frac{1}{x+1}
« Last Edit: June 02, 2009, 07:56:58 am by astarmathsandphysics »
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Offline zizo47

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Re: Maths C3 Help Please, this function stuff is killing me!
« Reply #2 on: June 02, 2009, 09:09:44 pm »
Thanks for the reply, now I know what im doing  ;D
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