Mathematics: Post your doubts here!

[slayer]

Assalam-o-alaikum wr wb..
here it is!
'R' is the region you don't need to shade! (unwanted region)

View attachment 9232​

Thanks alot! Really helped me

 

[always-smile :)]

I spent 30 mints on this part, cudnt get it =\ !!
Question 6, (c)

pi x 1.5^2 = 7.1
141.3-15.7 =125.6
12 x pi x 9 =339.3
pi x 4.5 = 63.617
7.1 + 125.6 + 339.3 + 63.617 = 535.617
if you need more details just tell me .. hope u got it

 

[always-smile :)]

In shear, the area of the triangle dosent change.. it remains the same..
In stretch, the area always changed

thnx

 

[always-smile :)]

help

which year is this?

 

[anooshraja]

Question 4dii​

:http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w04_ms_4.pdf​

plz kindly heip me iknow it's too question bt still help​

June06 questin 3cii,iii

 

[always-smile :)]

p4 question
oct4 questin 4dii,
Mj10 varient 41 questn 8dii
June06 questin 3cii,iii plz plz help me
oct7 questoN 3 all part kndly watinìng 4r ur reply

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may 2010 ---> you have to find the intersection point between the 2 curve to get the value of x ( there r 2 values x=2 and x=0.4 )
oct 2007 --->a-i) make substitution in the first equation with x=0 s0 it will be ( 0,1 )
ii)make substittion the first time with Y=0 and the second time with X=0 so the ans. is ( 0,4) (4,0)
b)since you have 2 points (0,4) and (4,0) work out the gradient
c) X<0
d)we said before that the intersection point is the points where the 2 equaions are equal so it will be ((x^2+1=4-x ))
e) use the quadratic formula to get the value of X (( 1.30 and -2.30 ))
f) (1.30 + -2.30)/2 = -0.5
hope i helped ...got it ??

 

[always-smile :)]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w11_qp_42.pdf question 7 part fi and ii plz help

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f- i ) x^3 - x^2 - 2x +1 = 0 divide by x and subtract 1
x^2 -x -2 + 1/x =0 add x
x^2 -2 + 1/x = x add 2
x^2 + 1/x = x + 2
ii) the equation is x+2 from (i)

 

[shefali]

for transformation matrix there is a particular way to find out....will be posting it in a few hours...till then just brush up your matrices please

 

[shefali]

HERE YOU GO FOR TRANSFORMATIONS. ANY DOUBTS DO ASK. THERE ARE OTHER METHODS IF YOU FIND THIS ONE DIFFICULT. I'LL POST THOSE IF YOU WISH.

 

[always-smile :)]

HERE YOU GO FOR TRANSFORMATIONS. ANY DOUBTS DO ASK. THERE ARE OTHER METHODS IF YOU FIND THIS ONE DIFFICULT. I'LL POST THOSE IF YOU WISH.

thank you so much ....and good morning

 

[always-smile :)]

HERE YOU GO FOR TRANSFORMATIONS. ANY DOUBTS DO ASK. THERE ARE OTHER METHODS IF YOU FIND THIS ONE DIFFICULT. I'LL POST THOSE IF YOU WISH.

what about if we have a triangle for example it won't be 2x2 matrix !!
should we take only 2 points ??

 

[shefali]

what about if we have a triangle for example it won't be 2x2 matrix !!
should we take only 2 points ??

yeah you just take two point (object) and then the images corresponding points
try a few and see if u get the correct answer...otherwise ill give u a different method

 

[always-smile :)]

yeah you just take two point (object) and then the images corresponding points
try a few and see if u get the correct answer...otherwise ill give u a different method

yeaaaaaaaaah... i seem like didn't look at the lesson for years ....i will thanx alot

 

[Yousif Mukkhtar]

Can anyone explain to me this probability question in O/N 09 Paper 42:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w09_qp_4.pdf
I didn't understand question 3 c

 

[Lost_Life]

GUYS MAJOR PROBLEM
I NEVER TOOK THIS THING ABOUT BEARINGS WHEN A SIDE IS EAST OF SOMETHING ! COULD ANYONE EXPLAIN IT TO ME PLEASE ???

 

[igcse student 5558]

MArk scheme for p4 jun 01 plzzzzzzzzzzzzz

 

[always-smile :)]

Can anyone explain to me this probability question in O/N 09 Paper 42:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w09_qp_4.pdf
I didn't understand question 3 c

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we have 2 cards with no. 1
the probability of it is 2/6 the we solve bii) the first not 1 is 4/6 and the second is 1 is 2/5 ((without replacement)) so the probability that one card is 1 from 2 cards is 4/6 x 2/5
then he wants that 1 card chosed is 1 before the third try ---so we have the probability that 1 from 2 cards has the no.1 . add this to the probability of getting 1 which is 2/6-------->2/6+ 4/6 x 2/5 = 3/5

 

[always-smile :)]

MArk scheme for p4 jun 01 plzzzzzzzzzzzzz

get it from this site www.freeexampapers.com

 

[always-smile :)]

GUYS MAJOR PROBLEM
I NEVER TOOK THIS THING ABOUT BEARINGS WHEN A SIDE IS EAST OF SOMETHING ! COULD ANYONE EXPLAIN IT TO ME PLEASE ???

i have the same problem if you can wait until night i can get it from my teacher

 

[Lost_Life]

i have the same problem if you can wait until night i can get it from my teacher

Thanks