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Mathematics: Post your doubts here!

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Sorry to post here but i need to somewhere.
This will help-
Please do watch and follow it.
 
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Yes I did the same...hope we get it correct....btw how did u solve the 7th binomial question...
yeah it was a binomial the 1st part
then 2nd part was binomial to normal conversion
n 3rd part u shld write the condis like : n is large (>30) , np>5 and nq >5
 
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http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w08_qp_1.pdf
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w08_ms_1.pdf

Question 10 (ii)
Please avoid solving it using differentiation. I haven't learnt it yet.

I don't get the gf (x) part. And why do we have to use the method; 'completing the square?
replace f(x) in g(x)
complete the square
equate the bracket u get from completing square to zero. ull get value of x
the value after the braket will be the value of y
(x,y) will be turning poitn so maximum point

like a(x-b)+c
x=b
y=c
max point (x,c)
 
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replace f(x) in g(x)
complete the square
equate the bracket u get from completing square to zero. ull get value of x
the value after the braket will be the value of y
(x,y) will be turning poitn so maximum point

like a(x-b)+c
x=b
y=c
max point (x,c)
Oh thank you for explaining rookz didu. :D
I was about to start. ;)
 
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