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AS Level Mathematics doubts.

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ambitious1

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Hey,

As you all know our mathematics p1 exams is tomorrow. So please post you doubts and queries here. Try & help whenever you can! :)
 
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ambitious1

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Please help;

May/June 2011 - 12 - Q6(i)
Can someone show me the exact way to simplify it out?
 
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sanzitdahal

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ambitious1 said:
Please help;

May/June 2011 - 12 - Q6(i)
Can someone show me the exact way to simplify it out?
Click to expand...
f(x)=(x+3)/(2x+1) now, ff(x)=x LHS=f{(x+3)/(2x-1)} ={(x+3)/(2x-1)+3}/{2(x+3)/(2x-1)-1} =(x+3+6x-3)/(2x+6-3x+1) =7x/7 =x
 
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