Mathematics: Post your doubts here!

[masterex567]

Thank you !
For the reflections on the Y-axis there are different matrices depending upon what..?
I mean what kind of different matrices that can possibly be there?..

I meant there are different matrices representing transformations depending upon the transformation.
for example matrix representing reflection in x axis is different from matrix representing reflection in y axis.

 

[Saad the Paki]

Thank you so much bro!
One more 10 a in same paper please

So basically the diameter cuts the tangent into 2 equal parts..
and the radius bisencts the angle and we know that each angle in am equilateral triangle is 60

 

[Ahmed Elsiddig]

Is sh

So basically the diameter cuts the tangent into 2 equal parts..
and the radius bisencts the angle and we know that each angle in am equilateral triangle is 60

ear and stretch coming?

 

[Ahmed Elsiddig]

So basically the diameter cuts the tangent into 2 equal parts..
and the radius bisencts the angle and we know that each angle in am equilateral triangle is 60

Is stretch and shear coming?

 

[masterex567]

mj 2012 qp 41.
Question 7 a ii and iii
how do you get the scale factors for enlargement?

 

[masterex567]

Is stretch and shear coming?

no

 

[NOneed2speedd]

M/J 2013 Paper 43, question 2, which region do we shade? The entire sector 6 cm from R?

 

[masterex567]

we don't have to draw any locus for along qr?

 

[AnonymousX9]

shouldn't we shade the entire sector as they said equidistant from PS and PQ??? :/

 

[NOneed2speedd]

Question is saying it's boundry is equidistant from Ps and Pq so yes boundry is touching the equidistant line

 

[NOneed2speedd]

we don't have to draw any locus for along qr?

Yes it will continue .... i didn't did it in hurry

 

[AnonymousX9]

M/J 2010 P41 Question 7c(i), please explain how do we show that ECD = 120.

Yes it will continue .... i didn't did it in hurry

MS doesn't say about any locus for along QR?

 

[Kiara P.]

Can someone show me how to solve Q7
0580/42/M/J/14.

 

[NOneed2speedd]

M/J 2010 P41 Question 7c(i), please explain how do we show that ECD = 120.



MS doesn't say about any locus for along QR?

It's in the question

 

[notnek01]

Can someone show me how to solve Q7
0580/42/M/J/14.

Which part?

 

[Kiara P.]

Which part?

Part i

 

[notnek01]

Part i

To find frequency in a bar chart you can find the area of the bar.

The area of the right-most bar is 30 x 0.4 = 12

 

[Ahmed Elsiddig]

someone please do oct/nov 2013 42...qn 6 b (iii)....please explain how the answer is obtained and thnx in advance

 

[Kiara P.]

To find frequency in a bar chart you can find the area of the bar.

The area of the right-most bar is 30 x 0.4 = 12

Thank you loads x !!

 

[notnek01]

someone please do oct/nov 2013 42...qn 6 b (iii)....please explain how the answer is obtained and thnx in advance

The only possible letters that can appear exactly twice are 'E' and 'N'. Start with 'E':

There are 3 options for 'E' appearing exactly twice :

E, E, not E
E, not E, E
not E, E, E

And similar for 'N' :

N, N, not N
N, not N, N
not N, N, N

For example, P(E, E, not E) = (3/11) x (2/10) x (8/9)

Have a go at the others yourself then add them all up. Let me know if any part doesn't make sense.