Mathematics: Post your doubts here!

[ZaqZainab]

i have done after 2010. and i will do 2013 on the last day.

same plans

 

[Thought blocker]

same planes

Plans*

 

[Lostsoul]

Help required please
May June 2008 Paper 3: 5, 7, 8 part ii and 10 part ii
October November 2008 Paper 3: 5ii, 6ii, 7ii, 8ii and iii, 9i and ii, 10ii, iii and iv.
JazakAllah in advance. All the best for 20th May

May June 2008:http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_s08_qp_3.pdf

Oct Nov 2008:http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w08_qp_3.pdf

 

[ZaqZainab]

i want before 2009
and i did those questions wrong because i wasn't in mood of doing anything.
after question 3 my all questions are correct. and it was not a difficult paper.
a good paper is one from which you can learn something. where the examiner can trick you, even for a moment.
but P1 is all like find max point, find point of intersection find area under graph etc
i have been doing these kinds of questions for two years

oh no wonder you are a genius i have been doing this question for 5 months

 

[ZaqZainab]

:'(

what paper is it?

 

[daredevil]

Since the line lies in the plane, the product of direction of line and the plane's normal must be zero.....so, you'll get one equation from this...and similarly, the points (4,2,-1) lies in the plane...so they must satisfy the equation of the plane....put these values in x,y,z you will get another equation.....solve them and you will get the respective values...

can u solve it if possible? bcz i hav tried and i can only get as far as getting one equation in b and c ... after that i cant seem to grasp it...

 

[Thought blocker]

what paper is it?

2011 p12

 

[ZaqZainab]

2011 p12

i will do it when i am free

 

[Thought blocker]

i will do it when i am free

ty

 

[ZaqZainab]

oh no wonder you are a genius i have been doing this question for 5 months

i learned something idk about you as you have been solving from 2 years but here
P and Q are the centers of the circle

 

[Suchal Riaz]

View attachment 39643
i learned something idk about you as you have been solving from 2 years but here
P and Q are the centers of the circle

no other info is given?

 

[Thought blocker]

no other info is given?

Yeah, thats bit hard to solve

 

[asd]

Oct Nov 2007, Q7, part (ii) Why are we supposed to use the radian mode instead of degree mode?
http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w07_qp_3.pdf

 

[daredevil]

How do we find out the perpendicular distance from a point with a position vector P to a line??
P.S. the equation of the line is given.

 

[ZaqZainab]

no other info is given?

No other but by now you might have known that RS is a tangent and UT too

 

[daredevil]

someone plz do this integration !! >__<

 

[sumeru]

How do we find out the perpendicular distance from a point with a position vector P to a line??
P.S. the equation of the line is given.

I will attatch the solved one for that vector question after a while...so don't worry

 

[sumeru]

View attachment 39658

someone plz do this integration !! >__<

cos4a=1-2sin^2(2a)
2sin^2(2a)=1-cos4a
sin^2(2a)=(1-cos4a)/2
Now integrate it.......

 

[asd]

cos4a=1-2sin^2(2a)
2sin^2(2a)=1-cos4a
sin^2(2a)=(1-cos4a)/2
Now integrate it.......

Dude, you're a genius. You must be taking Further Maths Lel.

 

[Snowysangel]

cos4a=1-2sin^2(2a)
2sin^2(2a)=1-cos4a
sin^2(2a)=(1-cos4a)/2
Now integrate it.......

Where did u get the equation 2sin^2(2a)=1-cos4a from?