Mathematics: Post your doubts here!

[zarasattar]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_s10_qp_31.pdf
Q 7 iii ?

 

[user]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_s10_qp_31.pdf
Q 7 iii ?

use pythagoras theorem
r--> radius..

 

[hm12]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_s11_qp_31.pdf
question 4 part (ii) please someone help quickly

 

[user]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_31.pdf
question 4 part (ii) please someone help quickly

Put x = 3^y and u'll get the eqn similar to the one above...!

u know the values of x ...so put 3^y = that value...
2 of them can not be solved...find the answer..
27^y = (3^3)^y =3^3y = x^3

 

[hm12]

Put x = 3^y and u'll get the eqn similar to the one above...!

u know the values of x ...so put 3^y = that value...
2 of them can not be solved...find the answer..
27^y = (3^3)^y =3^3y = x^3

thanks a lot

 

[hm12]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_w11_qp_33.pdf
in question 9 part (i) when i take the scalor product the answer comes out to be zero doesn't that show that they are perpendicular so how come its showing they are parallel please help quickly

 

[Zishi]

yar p3 ka paper hay aaj

Lol.

 

[user]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_33.pdf
in question 9 part (i) when i take the scalor product the answer comes out to be zero doesn't that show that they are perpendicular so how come its showing they are parallel please help quickly

u're taking the scalar product of n [vctor perpendicular to the plane] and b[direction vector of the line]...if line and plane are parallel..then the vector perpendicular to the plane should also be perpendicular to the line so u get it as zero

 

[hm12]

u're taking the scalar product of n [vctor perpendicular to the plane] and b[direction vector of the line]...if line and plane are parallel..then the vector perpendicular to the plane should also be perpendicular to the line so u get it as zero

oh yeah right thanks a lot i just suck at vector questions i hope an easy question comes on vectors

 

[user]

oh yeah right thanks a lot i just suck at vector questions i hope an easy question comes on vectors

yeah inshaAllah..i too hope so

 

[hm12]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_s10_qp_31.pdf
question 6 part (i) whatever i try i end up with sin(pie-x) how come its just sin x please help

 

[Sudesh]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_w11_qp_32.pdf

I cannot get the differential question right. Qs 4.

 

[user]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_qp_31.pdf
question 6 part (i) whatever i try i end up with sin(pie-x) how come its just sin x please help

sin (pi -x) = sinx....remember? angle in the first 2 quadrants are same and positive for sin?
i have to go so i didnt check the question...but all i can tell u is...dont forget sin(pi -x) = sin x

similarly sin(pi +x) = -sin x [angle in the third quadrant]

 

[hm12]

sin (pi -x) = sinx....remember? angle in the first 2 quadrants are same and positive for sin?
i have to go so i didnt check the question...but all i can tell u is...dont forget sin(pi -x) = sin x

similarly sin(pi +x) = -sin x [angle in the third quadrant]

thanks

 

[smartangel]

how do we find volume of revoultion..its there in p3 june 08 Q9..i thought it was only in p1 and i"ve forgotten it..plz help me!

 

[pspwxpfan]

Can someone tell me how to "simplify the coefficients" of a binomial expansion?
For example: 32-32x + 48x^2

 

[1357913579]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_s11_qp_33.pdf
please, please urgently number7 3rd part

 

[grumpy]

please quickly tell me when we are suppose to sketch some shaded region on argand diagram do we suppose to draw it on graph paper or not

 

[gary221]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_s11_qp_62.pdf​

Q 1​

 

[angelicsuccubus]

So.. what did you guys think? I prolly lost like 30 marks .. can't do these questions under a time limit =[