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Mathematics 9709 paper 12 how was it with you?

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ks136 said:
U mean by subjects i have taken in A LEVELS?..Accounting,maths and Business
Why were u curious?....AngelOfDeath
It's because all pakistanis i know took about 5 a levels so i'm kinda still shocked so i wanted to know if u did the same.. :p :S
 
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AngelofDeath said:
ks136 said:
U mean by subjects i have taken in A LEVELS?..Accounting,maths and Business
Why were u curious?....AngelOfDeath
It's because all pakistanis i know took about 5 a levels so i'm kinda still shocked so i wanted to know if u did the same.. :p :S

No...dont be shocked...mostly Pakistani's take 3 ...
 
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BILALrox01 said:
Adham-amr said:
Feelguud77 said:
Why is the tangent angle 71.6, the gradient was negative 3 so the angle was obtuse as in 180-71.6.........no?

That gradient makes 2 angles with its interception with the x-axis..the acute one and the obtuse one..since the question didn't clearly say calculate the acute/obtuse angle that this tangent makes with the x-axis, therefore both answers are correct ! because it makes with the x-axis angle 71.6 and 180-71.6

Both answers are correct but if u will notice the previous ms they prefer acute angles.

I wrote the acute one :Yahoo!:
 
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Adham-amr said:
sarah505 said:
does anyone remember dat binomial question???

I don't remember the first term, but the second term is ( something - 3/2 x ) ^6

That's right and the first term was 1 because my answers come with that answer :lol:
 
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sarah505 said:
and da second expression wid k? wz it (2-kx)?
Stop fretting about it ok. U can't change it. JUst do the next one as best as u can.. BTW th K was -1.. Us it to reach the original statement
 
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i personaly think someone shud lock this topic
its gettin out of hand and this seriously can affect the way u perform in later exams
stop regretting ur mistakes and pray for an easier m1 paper and go study
 
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@ahmed t I totally agree, crying over spilt milk won't change anything.
 
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The inverse function answer:
rewrite as

y = (x+3) / (2x+1)

solve for x

y (2x+1) = (x+3)
2xy + y = x + 3
2xy - x = 3 - y
x (2y-1) = 3 - y
x = (3-y) / (2y-1)

then "swap" x and y

y = (3-x) / (2x-1)

Should be correct.
 
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