Mathematics: Post your doubts here!

[MsbhS22]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_12.pdf
Question No. 9. Part i) can someone help me out with this question?? Please
Thanks

 

[AngelofDeath]

Hey guys I have a Math AS question.
How do I solve 1)ii)
I know I should substitute y=2x-(x)sqr but I don't know what next? Please help...
As well as 3)ii)

Thanks in advance

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_12.pdf

 

[roadtrip9o9]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_w10_qp_11.pdf Question 7 ?

 

[Nikesh]

Hey guys I have a Math AS question.
How do I solve 1)ii)
I know I should substitute y=2x-(x)sqr but I don't know what next? Please help...
As well as 3)ii)

Thanks in advance

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_12.pdf

for i) you might have expanded given expression up to 3rd terms
ii) first let y = 2x - x^2
and then use your expanded expression in (i) simplify all terms and then you will find coefficient of x^2

 

[Nikesh]

Hey guys I have a Math AS question.
How do I solve 1)ii)
I know I should substitute y=2x-(x)sqr but I don't know what next? Please help...
As well as 3)ii)

Thanks in advance

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_12.pdf

for 3 (ii) Let AB = (1/k) m (Since they are both parallel)
i.e. m = ABk.........(i)
use given position vectors to find AB when p=4
and then find vector m in terms of k with above equation....(i)
u r then given magnitude of m i.e. |m| = 28
use magnitude formula
u will get k=4
now substitute value of k in equation (i)
required vector is then m.
hope u got it

 

[Nikesh]

Assalamoalaikum wr wb!!

Can someone plz tell me Q: 1 (ii) of http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_qp_11.pdf

jazakAllah khairen...

if question is
tan(1/2pi - x ) then it goes like this
given tanx = k
now
tan(1/2pi - x) = tan (90 - x) = cotx = 1/tanx = 1/k...simple

 

[Helpneeded007]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_s11_qp_12.pdf
Q 2(ii) and Q3
Please Help
Thank You

 

[Esme]

Best of luck to all those who are writing P1 today.
May Allah grant us all success. (in this world and the hereafter) Ameen.
InshaAllah the ppr will be gud.

 

[Nikesh]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_12.pdf
Q 2(ii) and Q3
Please Help
Thank You

--> 2(ii) (1-3/2x)^6 --> expand it to the term of x^3
--> then multiply expression obtained with(k + 2x) you will two terms with x^3 include term with k
equate that with 0, solve it you will get value of k

 

[Nikesh]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_12.pdf
Q 2(ii) and Q3
Please Help
Thank You

Q3
compare given equation with ax2 + bx = c = 0, and deduce determinant i.e. (b2-4ac)^1/2
--> since equation has 2 roots, determinant is >0 i.e. (b2-4ac)^1/2 > 0
--> Solve and find values of p and q

 

[cHeStEr]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_12.pdf

8i and ii
9i
5i
4ii
10a

Thanks....

 

[user]

Best of luck to all those who are writing P1 today.
May Allah grant us all success. (in this world and the hereafter) Ameen.
InshaAllah the ppr will be gud.

aameeeeeen!!!!!!!!!

 

[trgirl]

aameeeeeen!!!!!!!!!

ameeeen

 

[JalalKaiser]

Guys, how would you prepare sketch of 3-2tan(x/2)?

 

[hm12]

Guys, how would you prepare sketch of 3-2tan(x/2)?

tried my best to draw properly it will reach infinity

 

[JalalKaiser]

tried my best to draw properly it will reach infinity

A friend of mine says this...
The negative sign means graph will be inverse and tan(x/2) means 360degrees mein se Tan will have 1 cycle (compared to the usual 2). So we're to make a graph with greatest value of y as 2 and then move the graph 5 units upwards!

 

[hm12]

A friend of mine says this...
The negative sign means graph will be inverse and tan(x/2) means 360degrees mein se Tan will have 1 cycle (compared to the usual 2). So we're to make a graph with greatest value of y as 2 and then move the graph 5 units upwards!

no the one i drew is right asked my maths teacher too coz when you take x=2 it becomes tan(pie/2) which gives math error on calculator so it will reach infinity before x=pie

 

[hm12]

no the one i drew is right asked my maths teacher too coz when you take x=2 it becomes tan(pie/2) which gives math error on calculator so it will reach infinity before x=pie

i meant when you take x=pie sorry typing error

 

[JalalKaiser]

no the one i drew is right asked my maths teacher too coz when you take x=2 it becomes tan(pie/2) which gives math error on calculator so it will reach infinity before x=pie

Its funny cos I asked my Maths teacher about that method I typed... he says it's right. -_-

 

[hm12]

Its funny cos I asked my Maths teacher about that method I typed... he says it's right. -_-

if we follow what you wrote then the range of this graph calculated in the previous part of this question that is f(x)<equal to 3 would be wrong too