• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Mathematics: Post your doubts here!

U

unique840

Messages
755
Reaction score
159
Points
53
jeffreylpy said:
Need help plz for nov 2011 paper 33 no 6(ii) could you do it for me plz.. how to find the eqn of the circle and the no 4 too. i am stuck somewhere.
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_33.pdf
Click to expand...
u have w. u can find out w^2
u have both the points. take their midpoint which will be the centre of the circle. that will be replaced by a and b. thn find the modulus of the 2 points which will be the distance between them. that will be the circumference. divide it by 2 to get the radius. radius will be k.
 
NouranAyman

NouranAyman

Messages
141
Reaction score
25
Points
28
daviruss said:
assalamu 3alaikom guys, iam going to sit for my AS exam in oct/nov 2012 Mathematics (P1,M1) and seems that every thing is going great el7amdolilah, but iam just having trouble in trying to calculate the surface area or the volume of a figure , for example when a question comes asking abt to show that A= blah blah :p. and that find h in terms of r, for example , and then a diffrentiation question , the diff question is easy but the hardest thing for me is to find the SA so please help me! iam going to sit for my exam soon. Can u till me any tip for how to prepare for the math AS , P.S. i do solve PP's
Click to expand...
heyy!! :D Im sitting for this too in November :/ I hope all the best for both of us! Dont worry this kind of questions are easy... You can show me one question and i can help you solving it as much as i can and in return i need u to help me with the domain and range and trignoemty graphs , i dont know how to solve those... and can you tell me what year are u in now?? :D
 
Minato112

Minato112

Messages
6,232
Reaction score
5,003
Points
573
Yousif Mukkhtar said:
Guys got a question for this paper:
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s05_qp_1.pdf
Question 5. How to get C here? I understood everything else.

Can you explain the vector method mentioned there?
Click to expand...
In fact there's a simple method where U can find C.

The method is:

The sum of x coordinates of two opposite points is equal to the sum of the x coordinates of the other two opposite. The same for y coordinates.

For U to better understand it:
Assuming the point A is (a, 0). (well U know the real value, I took it to be (a, 0) cuz' I dunno its real value)

Now take the point C to be (x , y)

Therefore, applying the above principle leads U to:
a + x = 2 + 6 = 8
Therefore x = 8 - a

Same for y:
0 + y = 10 + 2
Therefore y = 12

There the point C is ( 8-a , 12)

Hope it helps. :)
 
whitecorp

whitecorp

Messages
164
Reaction score
111
Points
43
iKhaled said:
can someone please explain to me question 9 ii) paper 1 october november 2009

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w09_qp_11.pdf
Click to expand...

The key idea is to first find the unit vector representing vector AC, and since this would have a magnitude of 1, we can simply multiply it by a factor of
30 to scale it to the required length. In other words, the required vector is simply equal to 30* unit vector of AC.

Hope this helps. Peace.
 
daviruss

daviruss

Messages
175
Reaction score
32
Points
38
NouranAyman said:
heyy!! :D Im sitting for this too in November :/ I hope all the best for both of us! Dont worry this kind of questions are easy... You can show me one question and i can help you solving it as much as i can and in return i need u to help me with the domain and range and trignoemty graphs , i dont know how to solve those... and can you tell me what year are u in now?? :D
Click to expand...
hey man , thx for the reply anyways am a senior, last year bro and i am doing my AS math in november , first of all not easy i have a big problems even though when they ask for radian and stuff am not good at geometry but u can post a question here and i can help solve and ill send the question as an inbox :)
 
parthrocks

parthrocks

Messages
821
Reaction score
231
Points
53
whitecorp said:
There you go. Hope it helps. Peace.

Click to expand...

Hey and one big doubt!!!So is it that we only apply continuity correction when the data is to be coverted from binomail to normal ????and do we apply when using the central limit theorem????cos in my stats 2 book there is one question where do do take into consideration the Continuity correction even if it is only central limit theorem!!!is the answer benhind my textbook wrong ???reply soon!!! whitecorp
 
You must log in or register to reply here.
Top