Mathematics: Post your doubts here!

[yuv2404]

thank you very much, now i got it

 

[My Name]

23 isn't bearings :|

To find the inverse matrix of
(3 -1)
(-2 2)

1/((3x2)-(-1x2)) *Here*

*This below*
(2_1)
(2_3)

1/4 (2_1)
.......(2_3)
^^^^^^ is the answer

How?

use the formula

1/(ad-bc) . (d..-b)
..................(-c ..a)
Invert the signs of any numbers in position b and c and switch the positions of a and d

Imagine there are no dots.. cant use lots of spaces here..

uggghhhhhhhhhhhhhh...............................IM UTTERLY SORRY
I KNOW MATRIX IWROTE THE WRONG QUESTION NUMBR
but this helped other ppl im sure

 

[My Name]

Anytime

answer my other question stooooooooooooo
plz
i kno im driving u upthe wall but ined the help
THANKU

 

[ManalMansoor]

Thank you so much
But I dont understand, how do we know about x-intercept?, why are we assuming y= 0 ?
Can we always use this method to find the y-intercept ?

Thanks in advance please

 

[Ameer Wardi]

Thank you so much
But I dont understand, how do we know about x-intercept?, why are we assuming y= 0 ?
Can we always use this method to find the y-intercept ?

Thanks in advance please

To find x-intercept you set y = 0 and to get the y-intercept you set x = 0

 

[Ameer Wardi]

answer my other question stooooooooooooo
plz
i kno im driving u upthe wall but ined the help
THANKU

I forgot which question, put the link again and I will try to find free time to solve it.

 

[My Name]

I forgot which question, put the link again and I will try to find free time to solve it.

they are above on page 216 and 217

 

[ahmadumar]

Hello, can anyone please give me tips or advice on how to revise for maths paper 2 and 4. I did a lot of practice but seem to get the same mark every time. My major problem is in Transformations ( Rotation, Reflection, Enlargement, Stretch and Shear) and matrices used in transformation. Can someone please help me by posting a good revision book or link? Thanks

guys try these

 

[Mahwish Khalid]

Can someone help me with Q5 part (d) page 195? It's actually from the book "Extended Mathematics for IGCSE by David Rayner".

 

[Ameer Wardi]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s09_qp_2.pdf

Question 22 part c and d
Question 8 part b
Question 19 with working
Question 16 is it like we make an angle bisector for th emeeting point or wat?

Question 17 part b an ez way to do reflection wen centre not zero-zero

I liked how u explained the answer
Ameer Wardi and
drugdealar106 and Bloodserpent
can u plz answer these too

thank u in advance!

 

[My Name]

THANK U soo
much
but canu answer all my doubts plZZZ

 

[ahmadumar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s09_qp_2.pdf

Question 22 part c and d
Question 8 part b
Question 19 with working
Question 16 is it like we make an angle bisector for th emeeting point or wat?

Question 17 part b an ez way to do reflection wen centre not zero-zero

I liked how u explained the answer
Ameer Wardi and
drugdealar106 and Bloodserpent
can u plz answer these too

thank u in advance!

hope its helps

 

[ahmadumar]

Can someone help me with Q5 part (d) page 195? It's actually from the book "Extended Mathematics for IGCSE by David Rayner".

post a pic

 

[Awesome12]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s09_qp_2.pdf

Question 22 part c and d
Question 8 part b
Question 19 with working
Question 16 is it like we make an angle bisector for th emeeting point or wat?

Question 17 part b an ez way to do reflection wen centre not zero-zero

I liked how u explained the answer
Ameer Wardi and
drugdealar106 and Bloodserpent
can u plz answer these too

thank u in advance!

Q 8)


The above post says it all

 

[ahmadumar]

Can someone help me with Q5 part (d) page 195? It's actually from the book "Extended Mathematics for IGCSE by David Rayner".

if its the one with the square base pyramid, find slant height, and then using half AB i.e 5 cm find VB or VA. then using cosine rules u can find the angle :3
it is complicated a bit. i'll draw and do it properly in d morning

 

[My Name]

THANX

Q 8)
View attachment 40008

The above post says it all

 

[My Name]

hope its helps

THANKU SHOOO MUCH!!
it did help
BUTin question 16 did u likwmake twoangle bisectors or what!
and ps can u plz post notes for BEaring frm scratch!

 

[Awesome12]

THANKU SHOOO MUCH!!
it did help
BUTin question 16 did u likwmake twoangle bisectors or what!
and ps can u plz post notes for BEaring frm scratch!

Bearings are simple. If they say find the bearing of
A from B
then draw a straight line on B (North line), and then in a clockwise direction go until A
The yellow line is for the above statement

The green angle is the bearing of A from C

 

[Mahwish Khalid]

if its the one with the square base pyramid, find slant height, and then using half AB i.e 5 cm find VB or VA. then using cosine rules u can find the angle :3
it is complicated a bit. i'll draw and do it properly in d morning

Yes, please do! Thanks.

 

[Mahwish Khalid]

post a pic

Q5 part (d) find the angle AVB.
Also tell me the answer for Q4 part (d) find the angle WDY if you know, thanks in advance!