Mathematics: Post your doubts here!

[panoramafolks]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w09_qp_31.pdf
I'm stuck in question no. 4. Please help me solve the qn.. I'll appreciate it.
Thanks

following is the ans.

 

[sitooon]

plz tell me if i am correct and tell me the answers and pastpaper year..

View attachment 34007
View attachment 34006

its definitely right and Thansk so much ,
what about the other parts

 

[BreakingBad]

Help Required:
http://olevel.sourceforge.net/papers/9709/9709_s13_qp_32.pdf

Question 9, part (b).
I know how to make the argand diagram. Simply want help with the greatest value of |z|. Thanks in advance.

 

[periyasamy]

Guys need help here for first and second part.Thank u a lot.
it is from http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w03_qp_3.pdf
and the ms is http://papers.xtremepapers.com/CIE/...hematics (9709)/9709_w03_ms_1+2+3+4+5+6+7.pdf

 

[panoramafolks]

Guys need help here for first and second part.Thank u a lot.
it is from http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w03_qp_3.pdf
and the ms is http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w03_ms_1 2 3 4 5 6 7.pdf

 

[periyasamy]

View attachment 34034
View attachment 34035

Thanks a lot man.

 

[man1811]

hhelp! does anyone know how to do q7 paper 2 june 08? i cant seem to understand the working shown in the marking sheet

 

[periyasamy]

Guys anyone can help me with the part 2 of this question
why in the answer is stated that 0.02t-ln95.Dont get this part.Thank u.

 

[panoramafolks]

Guys anyone can help me with the part 2 of this question
why in the answer is stated that 0.02t-ln95.Dont get this part.Thank u.

its not stated as u said...the ans. is following

 

[sufyman]

Hey guys a quick question eq. Of a line is y=kx+1, it is tangent to curve y=x2+3x+5 find values of k,
Thanks

 

[abruzzi]

following is the ans.
View attachment 34009
View attachment 34008

Thanks a lot for your help!
I don't get how you proved that the two values of X are within the range. It would be great if you could explain that.
Thanks

 

[panoramafolks]

Hey guys a quick question eq. Of a line is y=kx+1, it is tangent to curve y=x2+3x+5 find values of k,
Thanks

 

[panoramafolks]

hhelp! does anyone know how to do q7 paper 2 june 08? i cant seem to understand the working shown in the marking sheet

 

[sitooon]

i got help in first part only on integration ,
can someone help with the rest ?

 

[Tee Kay]

Hi, i'm stuck at figuring whats the values of the angles are as i haven't studied trigonometry yet, so if anyone can help me that'd be great

 

[Edella17]

8 Friends are to make a journey in 2 taxis,with four people in each taxi. In how many ways can this be done ?

Please help me solve this problem

 

[sweetiepie]

https://www.xtremepapers.com/community/threads/some-help-please.31264/ help here

 

[Isaac CKR]

I need help with this. Stuck at part (i) now.

 

[TheZodiac]

I need help with this. Stuck at part (i) now. View attachment 34491

dx/dt = k(100-x)
put the values given and solve for k:
1.9/100-5 = k
k = 0.02

 

[BreakingBad]

Hi, i'm stuck at figuring whats the values of the angles are as i haven't studied trigonometry yet, so if anyone can help me that'd be great

You can also draw the same shape as shown in the image attached. Then use cosine rule and sine rule to find the angles x and y. Use 2x and 2y to calculate arc lengths and accordingly the perimeter.

8 Friends are to make a journey in 2 taxis,with four people in each taxi. In how many ways can this be done ?

Please help me solve this problem

8C4 * 8C4 = 4900 (I think. Permutations and combination questions are really confusing.)

I need help with this. Stuck at part (i) now. View attachment 34491

dx/dt is directly proportional to (100-x)
dx/dt = k(100-x)
Substitute the given values and find k.
1.9/100-5 = k
k = 0.02

Do you need help with the rest of the question as well?