Final P42 MATHS doubts!

[dubi2pro]

last day guys! help out with this question please
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w13_qp_42.pdf

Q5 c (i) (ii) and d ii ( i actually never got this how to do)

Q9 (b) ii and (iii) same paper

 

[dubi2pro]

Also Q 6 , (b) (iii)

 

[ibrahimqasim123]

5ci) take the value of x from the graph when y=0
5cii) take the three value of x from the graph when y=7.5
5dii) you just have to simplify the equation as much as possible and find the value for a(first value), b(second value), and c(third value)
6biii) the answer should be something like: 3(2/1 x 1/10 x 1) + 3(3/11 x 2/10 x 8/9)
9bii)its just an enlargemnt..because the scale factor is -2, the image should be bigger but the other way around..
9biii) To do this easily.. Memorize the matrix for every transformation.. for shear y axis invariant it is (1 0 with K being the scale factor..
k 1) then all you do is take the points of the shape from the graph and multiply it with the shear matrix.. and you will get the points for the new shape...
I have attached a file with the matrices of each transformation with this reply..hope i helped

 

[dubi2pro]

5ci) take the value of x from the graph when y=0
5cii) take the three value of x from the graph when y=7.5
5dii) you just have to simplify the equation as much as possible and find the value for a(first value), b(second value), and c(third value)
6biii) the answer should be something like: 3(2/1 x 1/10 x 1) + 3(3/11 x 2/10 x 8/9)
9bii)its just an enlargemnt..because the scale factor is -2, the image should be bigger but the other way around..
9biii) To do this easily.. Memorize the matrix for every transformation.. for shear y axis invariant it is (1 0 with K being the scale factor..
k 1) then all you do is take the points of the shape from the graph and multiply it with the shear matrix.. and you will get the points for the new shape...
I have attached a file with the matrices of each transformation with this reply..hope i helped

thanks bro! but in the 6iii where did u get 8/9 from?

 

[dubi2pro]

and which line is y=0?

 

[The Mighty Nobody]

and which line is y=0?

y=0 simply means the x axis

 

[dubi2pro]

y=0 simply means the x axis

oh god! thanks!

but at y=x theres no solution to be found :S

 

[The Chill Master]

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@anyoneoverhere

can solve this question
Question 8 last part i have uploaded file answer 3.2 to 3.4

 

[Ameena Eesa]

guyyzzz srsly
***amd***
Ameena Eesa
Mai(M4!)
shoaib672002
Iridescent
shazmina
fantastic girl
Thought blocker
Awesome12
@anyoneoverhere

can solve this question
Question 8 last part i have uploaded file answer 3.2 to 3.4

Youll have to draw in the graph first

 

[Ameena Eesa]

guyyzzz srsly
***amd***
Ameena Eesa
Mai(M4!)
shoaib672002
Iridescent
shazmina
fantastic girl
Thought blocker
Awesome12
@anyoneoverhere

can solve this question
Question 8 last part i have uploaded file answer 3.2 to 3.4

get the value of x where y=1.7, then inverse your answer

 

[The Chill Master]

get the value of x where y=1.7, then inverse your answer

can u please show look if i take y=1.7 then x is 0.58 and 3.2

 

[Ameena Eesa]

can u please show look if i take y=1.7 then x is 0.58 and 3.2

yeah, so you will inverse it. say, what does your ms say?.......
acc. to me, youll do 1/0.58 and/or 1/3.2...........
ms says what?

 

[The Chill Master]

yeah, so you will inverse it. say, what does your ms say?.......
acc. to me, youll do 1/0.58 and/or 1/3.2...........
ms says what?

ms says 3.2 to 3.4

 

[My Name]

ms says 3.2 to 3.4

listennn
when function inverse
x becums y value y value becums x value
now tell me ami roght or rong

 

[My Name]

function (x) =

ms says 3.2 to 3.4

2^x
so 2^1.7=3.2

 

[My Name]

function (x) =

2^x
so 2^1.7=3.2

but they sy do it frm graph sooooooooooo
from x axis where x=1.7 go up find y value which wud be actually x value
becuz inverse of functoon
hope i helped u

 

[The Chill Master]

function (x) =

2^x
so 2^1.7=3.2

but they sy do it frm graph sooooooooooo
from x axis where x=1.7 go up find y value which wud be actually x value
becuz inverse of functoon
hope i helped u

boy o boy o boy epic cool rele thanx a lot got the answer thanx

 

[dubi2pro]

get the value of x where y=1.7, then inverse your answer

in a question if they asked like

find the inverse of matrix A eg.

(24
(43)

do we have to multiply the determinant with the adjoint and then give the answer or just simply leave it like 1/2 ( 32
(-4-4) ??

 

[My Name]

in a question if they asked like

find the inverse of matrix A eg.

(24
(43)

do we have to multiply the determinant with the adjoint and then give the answer or just simply leave it like 1/2 ( 32
(-4-4) ??

find determinant then
write inverseof matrix=
1/determinant and in brackets
the first diagonall (frm left ) exchnge numbers
the second diagonal(right top)
leave numbers in their original position but give opposite sign!
do u get it

 

[dubi2pro]

find determinant then
write inverseof matrix=
1/determinant and in brackets
the first diagonall (frm left ) exchnge numbers
the second diagonal(right top)
leave numbers in their original position but give opposite sign!
do u get it

ah so in the answer space we shouldnt multiply with the determinant yea?