Mathematics: Post your doubts here!

[qbdulsami]

Mathmatics syllabus d book 2 solution book needed help will be greatly appreciated

 

[saif mahmoud]

I really need help in a couple of Qs
View attachment 40963 How is the order of rotation 1???



View attachment 40964 Parts A,B and c-ii



View attachment 40965 ?????????

These are the only Qs im stuck on, and inshallah we all get A* this Tuesday (paper 2)

for the 2nd ques part a
look as the both lines are intersecting so we can say that at point A
the both equations are equal so 2x + y = 8 which is equal to y = 4
then substitute y = 4 into the formula so it becomes
2x + (4) = 8
2x = 4
x= 4/2
x= 2
so the point is (2,4)

 

[saif mahmoud]

for part be the point has to be (x,0) as at the x axis y = o
so place y in the equation 3x + y = 18
so 3x + (0) = i8
3x = 18
x = 18/3
x= 6
point is (6,0)

 

[saif mahmoud]

I really need help in a couple of Qs
View attachment 40963 How is the order of rotation 1???



View attachment 40964 Parts A,B and c-ii



View attachment 40965 ?????????

These are the only Qs im stuck on, and inshallah we all get A* this Tuesday (paper 2)

for cii
any line that is parallel to another linne must have the same gradient
so we know that 3x + y = ((a value lets say its c ))
3x + y =c
then place the coordinates of point m in the equation so
3 (4) + 2 = c
12 + 2 = c
c= 14
so the equation is 3x + y =14
y = -3x + 14

 

[saif mahmoud]

for the last ques he said they travelled the same distance so the area under both graphs are same so
Area 1 = find area of trapezium u will get 130
then find area of the down graph but u have one unknown which is the height that is v
as this is at triangle the area is equal to base * height /2 = 130
130 = 16/2 v
130 = 8v
v = 130/8
thats it

 

[Mahwish Khalid]

PLEASE REPLY ASAP AND SHOW WITH WORKINGS! Q13 (b), Q16, Q6, Q18.

 

[Mahwish Khalid]

PLEEEEAAASSSEEEEEE REPLYY ASAP.

 

[saif mahmoud]

PLEASE REPLY ASAP AND SHOW WITH WORKINGS! Q13 (b), Q16, Q6, Q18.

sry i dont have enough time to do the working i can just tell u the way

 

[saif mahmoud]

all these questions are baby stuff try them once again

 

[ManalMansoor]

I know this is the answer, but don't know how to proceed. Please help!

 

[princess sofia]

PLEASE SHOW THE WORKINGS.

v
Sorry i m unable to post here , no idea why i cnt ​

 

[Mahwish Khalid]

Okay just show the way for Q13 b, I hate map scales.

sry i dont have enough time to do the working i can just tell u the way

 

[qazmed]

guys some qs say without your calculator ............ then show all you working,
i do some multiplication and other simple stuff on calc but main is on paper , do i need to show those operations on the side eg(36x79)

 

[ManalMansoor]

guys some qs say without your calculator ............ then show all you working,
i do some multiplication and other simple stuff on calc but main is on paper , do i need to show those operations on the side eg(36x79)

Its better if you show all your working on the paper in order to not lose any mark

 

[princess sofia]

guys some qs say without your calculator ............ then show all you working,
i do some multiplication and other simple stuff on calc but main is on paper , do i need to show those operations on the side eg(36x79)

Yes better to show each n every step in such questions

 

[mohabxD]

can someone please explain how to find the matrix of a transformation and how to fully describe a transformation? thanks..

 

[My Name]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s13_qp_23.pdf
question11 part b
question 15 part c
question 20 part b do we square it to take out the square root or what??
plz explain and thank u

 

[My Name]

can someone please explain how to find the matrix of a transformation and how to fully describe a transformation? thanks..

u need to mention all the things that changed wen the image was formed
eg
translation mention vector
shaer and strectch mention the scale factor an dinvariant line
rotation mention direction angl and and centre
enlargement center and scale factor
releftion mention mirror line
Hope this helped

 

[mohabxD]

u need to mention all the things that changed wen the image was formed
eg
translation mention vector
shaer and strectch mention the scale factor an dinvariant line
rotation mention direction angl and and centre
enlargement center and scale factor
releftion mention mirror line
Hope this helped

thank you very much, tho u answered one part of my question ... how to find the matrices..?

 

[My Name]

thank you very much, tho u answered one part of my question ... how to find the matrices..?

umm sorry the thing si that it is sort of hard for me exolain it
in messages
y not try a video on u tube