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Mathematics: Post your doubts here!

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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

inverse matrix is easy !!
1) find the determinant
2)then put the determinant 1/IAI with matrix !!
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

wat type of inequalities...???
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

how to solve inequalities sums............................

PLZ help
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

IGCSE MATH 0581 PAPER 4 NOVEMBER 2005 QUESTION 5 PART C

ANY HELP WOULD BE APPRECIATED
 

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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Assalamoalaikum!!

well...i saw that question ..it's easy....but i can only tell u that in specific if u can show me the solution....otherwise i wont be able to explain it..or just let me know how it is...like what's it max./min. point :)
 

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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

boodi196 said:
Can u help me in physics about KE? :(
MJ 2009 paper 3 physics question 5 section Bi) PLEASE HELP ME :(
Assalamoalaikum!!

well i'm not checking this...as your query has been answered here

by the way sorry for the late reply!
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

nice Question !! is it from Past papers ?? It sets right ??
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

i think that the answer is 20
u can solve this question by drawing a venn diagram
Here is the solution:-
11+12+6+7+3x=60
therefore x=8
nowww.....
add 8+6+6=20
Therefore pills containing Vitamin A=20
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

@HyDraZin3= You missed the pills that contain only Vitamin A. And you have to add 8 twice and not 6 twice. So 8+8+6+12=34..
The total number of pills containing Vitamin A are 34.
You should use venn diagram for this question. It'll make it very simple.
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Exactly @hamidali391 !
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

yaa hamidali391 u are right i forgot that :p
doing with venn diagram makes it very simple :D :D
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

No problem any more questions just ask !! :D
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

assalamualaikum math angel.....

I just wanted to ask is there any specimen paper for year 2011 IGCSE extended maths..if so plz give me the link...
Thanx...
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Go through Extended maths at XP and look for Sp abbrevation which is for specimen paper and then download the 2011 one !!
 

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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Farhana.Crystalaire said:
assalamualaikum math angel.....

I just wanted to ask is there any specimen paper for year 2011 IGCSE extended maths..if so plz give me the link...
Thanx...


Waalaikumassalam!! :)

No, specimen papers are published when they change the pattern/style of the questions. I just checked the CIE Website, the latest specimen paper published was the Paper 4 in the year 2009 ! :)

Check the link above to access the latest specimen paper.
Hope this helps! :)
Thanks for your query, Jazak Allah Khair!
Please do not hesitate if you have any more questions! :)
 
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Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Please help.

Question:

f:x -> (x+2)/a; a not 0. g:x -> 2x^2+1. If gf(x) = 2x^2 - bx +9, find the values of a and b.

The answer is a=1, b= -8 and a= -1, b= -8


So here is what I worked out so far:

gf(x) = 2 ( (x+2)/a )^2 + 1 = 2x^2 - bx + 9
therefore 2 ( (x+2)/a )^2 = 2x^2 - bx + 9 - 1
so then 2 ( (x+2)/a )^2 = 2x^2 - bx + 8

but how do i solve for a and b when there is only 1equation to work with?
 
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