Discussion in 'International A And AS Level' started by XPFMember, Sep 8, 2011.
find the range of f(x)=3-4cos^2 x
Domain? Post d exact question so i can collect all info
I just need domain over here though
http://papers.gceguide.com/A Levels/Mathematics (9709)/9709_s11_qp_12.pdf
question # 9
thank u so much
So it is very simple.
Input d value of domain into d function and respective values will be d value of range.
here wen u put zero in equation u will get -1
and wen u put pi in equation u will get 3
so -1 <= f(x) <= 3 will b d answer
aaahhh it was so simple
thanks alot buddy!
Help required guys?
Hasnain the rocker Ayesha Asif333 Emmris hellen
(i) (6 3/4 ) / (3/8) = 18 classes
(ii) 3/8 * 28 = 10 1/2 kg
(iii) 10 1/2 - 6 3/4 = 3 3/4 kg
(iv) 3/8 * 15 = 5 5/8 kg
(v) 6 3/4 - 5 5/8 = 1 1/8 kg
Hope it helps
Only one ans is wrong otherwise everything's correct
Oh sorry ...is it the last part dat is incorrect ....
Nope its the first one..
No need to be sorry lol. You helped and that was really kind of you
Then wats the answer
Ah OK I just had 2 express it as a fraction ....
I'm pretty sure you won't get this type of question in your IGCSE maths exam
A die is biased so that the probability that is shows a six on any throw is p. The experiment is repeated and another 97% confidence interval is found. Find the probability that exactly one of two confidence intervals includes the true value of p. ANS :0.0582 How to do ?
It must be twice the value of 0.03 times 0.97
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