Mathematics: Post your doubts here!

[Amir Tosson]

Does anyone know the correct final answer of the question that asked for the inverse function? (The one with the cube)

 

[bluefa1con]

Does anyone know the correct final answer of the question that asked for the inverse function? (The one with the cube)

2(x-something)cube

 

[Amir Tosson]

2(x-something)cube

:O ??? Shouldn't the final answer have a cubic root in it (to remove the cube)????

 

[Ahmedm96]

if i lost about 0-3 marks in that and if you lose 8-15 marks in p.4 can i guarantee a*

 

[Amir Tosson]

if i lost about 0-3 marks in that and if you lose 8-15 marks in p.4 can i guarantee a*

Based on the curves I've seen, I think you can get an A*.

 

[natsume hyuga]

guys i need to ask a question, if x is a positive integer and x<5.5 . What are the values of x?

 

[Amir Tosson]

guys i need to ask a question, if x is a positive integer and x<5.5 . What are the values of x?

1,2,3,4 and 5

 

[beewhiz997]

guys i need to ask a question, if x is a positive integer and x<5.5 . What are the values of x?

1,2,3,4 and 5

no zero is also included!

 

[joulie]

what is the matrix for shear and stertch

 

[beewhiz997]

what is the matrix for shear and stertch

here:

shear (x axis) (1 k
0 1)

shear (y axis) (1 0
k 1)

stretch (y axis) ( k 0
0 1)

stretch (x axis) (l 0
0 k)

 

[Meg]

I just gave my paper 2 in maths. It was good but I messed up in the transformations bit :/
I have my paper 4 exam in a few days. Any tips to go about revising for it?
Also..im terrible at graphs and transformations.
any way to make it easier?
thanks a tonne

 

[bluefa1con]

:O ??? Shouldn't the final answer have a cubic root in it (to remove the cube)????

no than the function will be in cube root aswell
there was another part question where u had to under root it

 

[bluefa1con]

guys i need to ask a question, if x is a positive integer and x<5.5 . What are the values of x?

in exam it was x<4.something
so answer was 1,2,3,4
0 may be included but it doesnt fit exactly in positive integers

 

[beewhiz997]

I just gave my paper 2 in maths. It was good but I messed up in the transformations bit :/
I have my paper 4 exam in a few days. Any tips to go about revising for it?
Also..im terrible at graphs and transformations.
any way to make it easier?
thanks a tonne

just learn the matrices of transformation and such( characteristics of transformations), u will be fine, there is a specific technique i use for memorising the matrices. make sure ur graphs are accurate by not making huge points, double checking the lines, etc

 

[Amir Tosson]

The 2nd question in the exam,
the lines of symmetry question was: I and O
and the order of symmetry was I, O and N.. PLEASE SAY RIGHT!! :'(

 

[bluefa1con]

The 2nd question in the exam,
the lines of symmetry question was: I and O
and the order of symmetry was I, O and N.. PLEASE SAY RIGHT!! :'(

sorry u got both wrong
line of symmetry was I
rotaional symmetry was I and N

O has infinite symmetry so it is wrong
again sorry for your loss

 

[beewhiz997]

The 2nd question in the exam,
the lines of symmetry question was: I and O
and the order of symmetry was I, O and N.. PLEASE SAY RIGHT!! :'(

sorry wrong....

 

[Amir Tosson]

sorry u got both wrong
line of symmetry was I
rotaional symmetry was I and N

O has infinite symmetry so it is wrong
again sorry for your loss

But wait, I Googled "How many lines of symmetry does the capital letter O have?" and all results said that O has 2 rational symmetry! :S Bec O is not a circle

 

[bluefa1con]

But wait, I Googled "How many lines of symmetry does the capital letter O have?" and all results said that O has 2 rational symmetry! :S Bec O is not a circle

u can cut the circle from any where(from centre obviously) and still get a symmetrical figures

 

[Amir Tosson]

Check this --> http://www.nku.edu/~mathed/Alphabet.pdf
It's got proof that O has 2 lines of symmetry and rational order 2