Mathematics: Post your doubts here!

[BhaiArshad]

how to know if a function will have inverse or not ..and how to find minimum value for it to be inverse

Go here: http://www.examsolutions.net/maths-revision/syllabuses/CIE/period-1/P1/module.php
See the function related pages.

 

[TheJDOG]

http://maxpapers.com/wp-content/uploads/2012/11/9709_s13_qp_32.pdf
Q5

Ahh I'm late, sorry I just arrived, what Ahmad said is true

 

[tiki-taka]

http://onlineexamhelp.com/wp-content/uploads/2014/08/9709_s14_qp_13.pdf
http://onlineexamhelp.com/wp-content/uploads/2014/08/9709_s14_ms_13.pdf
8(i) is the ms wrong b-a= 4 -2 4 ?
9(i) anyone plz

 

[BhaiArshad]

http://onlineexamhelp.com/wp-content/uploads/2014/08/9709_s14_qp_13.pdf
http://onlineexamhelp.com/wp-content/uploads/2014/08/9709_s14_ms_13.pdf
8(i) is the ms wrong b-a= 4 -2 4 ?
9(i) anyone plz

MS is correct for 8(i).

 

[sara kamal]

y^2=6ax-3x^2
Insert this value of y in the equation of the curve to get an expression in x and a. Solve the equation.

thanku

 

[BhaiArshad]

http://onlineexamhelp.com/wp-content/uploads/2014/08/9709_s14_qp_13.pdf
http://onlineexamhelp.com/wp-content/uploads/2014/08/9709_s14_ms_13.pdf
8(i) is the ms wrong b-a= 4 -2 4 ?
9(i) anyone plz

9(i)
Height is not given so it can be found by Volume / Base Area.
Base Area is 3x * x = 3x^2
Height is found to be 96/x^2
Total Area = 2(Base Area) + 2(Height * x) + 2(Height * 3x) = 6x^2 +192/x +576/x = 6x^2 + 768/x

 

[tiki-taka]

9(i)
Height is not given so it can be found by Volume / Base Area.
Base Area is 3x * x = 3x^2
Height is found to be 96/x^2
Total Area = 2(Base Area) + 2(Height * x) + 2(Height * 3x) = 6x^2 +192/x +576/x = 6x^2 + 768/x

thanks man!!!!

 

[DESTROYER1198]

9709 w14 qp 12 Q7 can some please explain for me how do we find AM in i

 

[DeadlYxDemon]

Anyone here done the whole paper 1 "M/J 2014 - V12"?
Seriously it's hard and unfortunately I have the same variant tomorrow! Help!

 

[Omer egaily]

w

Anyone here done the whole paper 1 "M/J 2014 - V12"?
Seriously it's hard and unfortunately I have the same variant tomorrow! Help!

hey
which Q u dont understand ?.

 

[papajohn]

http://studentbounty.com/pastpapers/Cambridge International Examinations (CIE)/International AS and A Level/Mathematics (9709)/2013 Nov/9709_w13_qp_13.pdf
Please Q:7 part B.... Urgently
How do we get 11/12pi ??????????????????????????

 

[DeadlYxDemon]

w


hey
which Q u dont understand ?.

The 4th one and few others too..

 

[DeadlYxDemon]

9709 w14 qp 12 Q7 can some please explain for me how do we find AM in i

AM is (OM - OA).
OA is 8i

 

[TheJDOG]

The 4th one and few others too..
View attachment 53079

There you go bro

 

[TheJDOG]

The 4th one and few others too..
View attachment 53079

What are the others? Post them so I solve and explain them for you

 

[DeadlYxDemon]

What are the others? Post them so I solve and explain them for you

 

[papajohn]

http://studentbounty.com/pastpapers/Cambridge International Examinations (CIE)/International AS and A Level/Mathematics (9709)/2013 Nov/9709_w13_qp_13.pdf
Please Q:7 part B.... Urgently

Please,,

 

[Ram97]

Please,,

 

[3l_general]

Question 7 plzzz quickly I have exam tomorrow

 

[Bilal Khan]

A car of mass 1100 kg starts from rest at O and travels along a road OAB. The section OA is straight,
of length 1760 m, and inclined to the horizontal with A at a height of 160m above the level of O. The
section AB is straight and horizontal (see diagram). While the car is moving the driving force of the
car is 1800N and the resistance to the car’s motion is 700 N. The speed of the car is v ms−1 when the
car has travelled a distance of x m from O.


(i) For the car’s motion from O to A, write down its increase in kinetic energy in terms of v and
its increase in potential energy in terms of x.

Increase in Potential Energy = 1000x . How ??