Mathematics: Post your doubts here!

[Cuteangel]

Re: IGCSE Maths Help--Available Here--Any Question

ok. There are so many forms of maths in IGCSE e.g international maths, additional mathematics, maths with coursework. What is the difference b/w dem and how many of dese cn a person give in one session?

u can give all of them in one session if there is any clash they will give u extra time to solve the paper

 

[hredoymohammad]

q no 12...i did not understand ..i luked up at mark scheme ..but dat did not help me...
n q no 13 (c) ...i think the mark schem is wrong http://www.xtremepapers.com/CIE/ind...E/0580 - Mathematics/&file=0580_w09_qp_11.pdf thx

 

[Toomuch1995]

Circle theorems is confusing any tips on this topic

 

[GetSomeLife]

q no 12...i did not understand ..i luked up at mark scheme ..but dat did not help me...
n q no 13 (c) ...i think the mark schem is wrong http://www.xtremepapers.com/CIE/index.php?dir=Cambridge IGCSE/0580 - Mathematics/&file=0580_w09_qp_11.pdf thx

u hv to make its net diagram (means u jst open it into a flat piece nd draw its diagram on d given space!). in d space given, 1 box represents 1 cm^2 (1 cm by 1 cm). The prism has 3 sides with the length of 7 cm. the rectangle already made marks d prisms base and exactly same rectangles r to b made on top and botom of dis rectangle. In d prism, d 3 sides r linked together by 2 triangles on deir sides. Dese triangles also have to b made on d space! The most accurate method is to use a compass to make an arc with 4 cm each (and d width of the given rectangle is to b used as d triangles base). Dis forms an equilateral triangle (4 cm each side) on d side. Repeat dis method wid d other side and ur answer iz complete!

as fer d oder 1....
NO, d mark scheme iz correct. d answer iz (2, -2)!
HOW? from G, u go back 2 blocks and den go down 7 blocks to get ur answer!!


HOPE I HELPED!!

 

[hredoymohammad]

can u help me with Q 12 .....the 1st part of the sum 1) find set of values of k for which the equation f(x)=3 has no real roots

 

[hredoymohammad]

hey need some help again....i did not understand m/j/10 ..paper 22 question 12 i).fint the set of values of k for.......has no real roots http://www.xtremepapers.com/CIE/index.php?dir=Cambridge%20IGCSE/0606%20-%20Mathematics%20%28Additional%29/&file=0606_s10_qp_22.pdf

 

[CaptainDanger]

hey need some help again....i did not understand m/j/10 ..paper 22 question 12 i).fint the set of values of k for.......has no real roots http://www.xtremepapers.com/CIE/index.php?dir=Cambridge%20IGCSE/0606%20-%20Mathematics%20%28Additional%29/&file=0606_s10_qp_22.pdf

Know about discriminant? b^2-4ac? Make the equation and put the discriminant as < 0

 

[hredoymohammad]

Know about discriminant? b^2-4ac? Make the equation and put the discriminant as < 0

i know about b2 -4ac,,,,,,,the mark scheme says k2 – 16k + 48 * 0...now where did the 48 come from?

 

[CaptainDanger]

i know about b2 -4ac,,,,,,,the mark scheme says k2 – 16k + 48 * 0...now where did the 48 come from?

- 4 into 4 into - 3? Got it? Or Should I solve it?

 

[Abdullah Yousuf]

I need help in GRAPHS OF FUNCTIONS and STATS (Histrograms)

​

 

[CaptainDanger]

I need help in GRAPHS OF FUNCTIONS and STATS (Histrograms)

​

http://www.khanacademy.org/video/histograms?playlist=ck12.org Algebra 1 Examples

http://www.s-cool.co.uk/gcse/maths/graphs/revise-it/algebraic-graphs

 

[Abdullah Yousuf]

http://www.khanacademy.org/video/histograms?playlist=ck12.org Algebra 1 Examples

http://www.s-cool.co.uk/gcse/maths/graphs/revise-it/algebraic-graphs

Thanx

 

[Ahmedm96]

ineed help in nets and loci

 

[alabibi]

can anyone give me a complied math formula sheet for paper 2 extended?
thanks

 

[CaptainDanger]

can anyone give me a complied math formula sheet for paper 2 extended?
thanks

There is one which is for both Papers...

Here :

 

[emma_rodge]

hey, i cant seem to figure out this question from the igcse maths book extended. its on chapter 9 matrices and transformation

"the image of point (m,n) is the point (11,7). Find the values of m and n"

can anyone please help? thank you

 

[Iridescent]

hey, i cant seem to figure out this question from the igcse maths book extended. its on chapter 9 matrices and transformation

"the image of point (m,n) is the point (11,7). Find the values of m and n"

can anyone please help? thank you

Can u xactly mention da exercise?

 

[emma_rodge]

okay, so here is what they gave:

The image (x',y') of a point (x,y) under a transformation is given by
vector (x',y') = matrix (3 0 1 -2 ) . vector (x,y) + vector (2,5)
y' 1 -2 y 5
(a) find the coordinates of the imgae of the point (4,3) . => this part i could figure out but i didn't get (b)

(b) The image of the point (m,n) is the point (11,7). Write down two equations involving m and n and hence find the values of m and n.

thanks so much!

 

[Iridescent]

okay, so here is what they gave:

The image (x',y') of a point (x,y) under a transformation is given by
vector (x',y') = matrix (3 0 1 -2 ) . vector (x,y) + vector (2,5)
y' 1 -2 y 5
(a) find the coordinates of the imgae of the point (4,3) . => this part i could figure out but i didn't get (b)

(b) The image of the point (m,n) is the point (11,7). Write down two equations involving m and n and hence find the values of m and n.

thanks so much!

It says da image of da point (m,n) is (11,7) which means (x',y') = (11,7)
So, (11 7)=(3 0 1 -2)(m n)+(2 5)
(11 7)-(2 5)=(3 0 1 -2)(m n)
(9 2)=(3m x-2y)
equarion 1--> 3m=9
m=3
equation 2--> m-2n=2
3-2n=2
-2n=-1
n=1/2

 

[emma_rodge]

It says da image of da point (m,n) is (11,7) which means (x',y') = (11,7)
So, (11 7)=(3 0 1 -2)(m n)+(2 5)
(11 7)-(2 5)=(3 0 1 -2)(m n)
(9 2)=(3m x-2y)
equarion 1--> 3m=9
m=3
equation 2--> m-2n=2
3-2n=2
-2n=-1
n=1/2

oh, i got it now! thank you!