Mathematics: Post your doubts here!

[hussamh10]

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_w10_qp_13.pdf Q4 second part plz explain how to make a line i did not get the question

 

[Minato112]

yeah its 400 i got it

U want the workings?

 

[Minato112]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_13.pdf Q4 second part plz explain how to make a line i did not get the question

2 *pie* sin x= *pie* - x

2 sin x = ( *pie* - x) / *pie*
= 1 - (x/*pie*)

Therefore U have to draw the line y = 1 - (x/*pie*) and the number of roots is equal to the number of intersection of the line and ur curve.

Hope it helps

 

[leadingguy]

OHK everyone good luck to those giving p1 9709 on wednesday

 

[bamteck]

OHK everyone good luck to those giving p1 9709 on wednesday

Thank you

 

[hussamh10]

OHK everyone good luck to those giving p1 9709 on wednesday

 

[parthrocks]

OHK everyone good luck to those giving p1 9709 on wednesday

help me plzzzz
http://www.mediafire.com/?u993euc8iqczo4v

 

[hussamh10]

U want the workings?[/no i got it

 

[leadingguy]

help me plzzzz
http://www.mediafire.com/?u993euc8iqczo4v

2x-1 = 0 is a factr means find x and put that value in eq. solvng it to = 0


now u wil gt eq. in a and b .

then another x-2 =0 is given find x here and put it in the eq. again, this time do nt slve the eq. fr = o!!! solve fr = 12 as stated that when this alue is applied remainder will be 12.

so u will gt another eq. in trms of a and b. now slve bth simul. hope it is clear??

Cope up boy.. it is paper time

 

[hussamh10]

Are sin^2x,cos^2x and tan^2x graphs included in syllabus and the simple tanx graph??

 

[leadingguy]

Are sin^2x,cos^2x and tan^2x graphs included in syllabus and the simple tanx graph??

nopes enjoy

 

[Kumkum]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

I need help on question number 8(i) and (ii), question paper may/june 2004 Paper 1. please help

 

[leadingguy]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

I need help on question number 8(i) and (ii), question paper may/june 2004 Paper 1. please help

bhai pst links here please i will co-operate

 

[Kumkum]

bhai pst links here please i will co-operate

http://www.xtremepapers.com/papers/...AS Level/Mathematics (9709)/9709_s04_qp_1.pdf,question number 8(i) and (ii)

 

[leadingguy]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s04_qp_1.pdf,question number 8(i) and (ii)

perameter of window = perameter of semi crcle + peramtr of rctngle
8 = 2πr/2 + 2(2r + h)
8= πr + 4r+2h
8 - πr - 4r =2h
(8 - πr - 4r )/2 = h slved

now prt 2

area of window = area of semi crcle + area of rectangle
A = πr^2/2 + 2r*h ..... substitute the vLUE of h here whch was expresse earliear.

 

[Beca1206]

Hey everyone
can anyone work Oct/Nov 2009 paper 1 variant 2 question 10 please!!!
I'm looking for the answer to the question with the angles. Thanks!!!

 

[panda222]

Hey thanks panda222.
For graphs of sine cos and tan, can you brief me about the things that you should know about these, i mean in terms of amplitude etc...
One more thing, number 11 of same question paper. How do you do (iii)?
Thanks once again buddy.

Yes so a sine graph looks like this:

Y=sinx

Y=cosx

Y= tanx

So for the sin graph, amplitude is 1 (unless there's some other number like in that previous question). Period is 2 pie.

For cos x graph. Its pretty much same as sinx except it intercepts at 1. Same period and amplitude.

Tanx has a whole diffferent story. Just learn that damn graph. No amplitude. Period is one pie.

 

[whitecorp]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_13.pdf Q4 second part plz explain how to make a line i did not get the question

Divide 2 pi sinx =pi -x by pi on both sides, we have
2 sinx = 1- x/pi = (-1/pi)*x +1
The line you have to sketch would be y=(-1/pi)*x +1 , where its gradient is simply -1/pi, and y-intercept value is 1.
Hope this helps. Peace.

 

[whitecorp]

Hey everyone
can anyone work Oct/Nov 2009 paper 1 variant 2 question 10 please!!!
I'm looking for the answer to the question with the angles. Thanks!!!

Posting the question here would be nice. Peace.

 

[panda222]

Posting the question here would be nice. Peace.

Indeed, i second that.