Mathematics: Post your doubts here!

[ManalMansoor]

This is an easy one !!!!!!
The AB is 100m actually. So, convert 100m into cm which will be 1000cm.
So the value of n will be 1000

When we convert 100m to cm, we get 10,000 cm not 1000 cm. :/

 

[Thought blocker]

When we convert 100m to cm, we get 10,000 cm not 1000 cm. :/

When we convert 100m to cm, we get 10,000 cm not 1000 cm. :/

1m = 100cm
so
100m = 10,000cm
:/

 

[ManalMansoor]

1m = 100cm
so
100m = 10,000cm
:/

Exactly!

 

[MÁťT PŭמҚ]

View attachment 40478 View attachment 40479
may june 2010 42!! :/

anyone? :/

 

[ahmadumar]

ahmadumar so you're in Alevels now? And what did you get in Maths in IGCSE? And how did you prepare for it?

yes i started my As levels in february this year and gave my igcse in oct nov last year
ALhamdulillah i got A* (96) for maths. and all i did was past pprs

 

[ahmadumar]

anyone? :/

 

[ahmadumar]

anyone? :/

 

[shoaib672002]

Might help

• Find the product AB for the following matrices:
  • 
    
    
    
    
  To calculate AB, I write down A and B next to each other like this:
  
  • 
    
    
  Now I need to multiply the ROWS of A by the COLUMNS of B. By this I mean that I first take the first row of A and the first column of B, and I multiply the first entries, then the second entries, and then the third entries, and then I add the three products. The sum is one entry in the product matrix AB; in fact, being the product of row 1 and column 1, the result is the 1,1-entry of AB. Then I continue in like manner. For instance, the sum of the products from row 2 of A and column 1 of B is the 2,1-entry of AB.
  
  When I multiply matrices, I use my fingers to keep track of what I'm doing. The following animation is my attempt to illustrate this process. (Don't laugh; I'm no artist!)
  

• 
  (Now, class; what did I say about laughing?)
  
  The final answer is:
  
  • 
    
    
    
    

 

[ahmadumar]

When we convert 100m to cm, we get 10,000 cm not 1000 cm. :/

so first of all can u tell me what answer did u get and how did u calculate it?

 

[ahmadumar]

View attachment 40622
HEEELLLPPPPP.

 

[Mubariz Ahmed]

Hey i have this really hard maths question i cant get the answer at all 0580 w11 qp43.....question 8e
The answer is 9 but i cant get itView attachment 40603

i got it
f^-1 (x)=x/3 -1

 

[ahmadumar]

Can someone please help me solve these all variant 22, November2004 Q 19 , Q8 andQ16 may 2010 and Q17 may2009 ( how do I do transformation if the centre isn't (0,0)?) . I'm sorry they are a lot , thanks in advance. If you please have notes about transformations I'll be very grateful

 

[shoaib672002]

 

[shoaib672002]

View attachment 40724

HOWWWWW

 

[Evangeline]

www.youtube.com/watch?v=0M5kYoqKAkc‎
the best site--> http://www.s-cool.co.uk/gcse/maths/transformations/revise-it/transformations
http://www.mathsmadeeasy.co.uk/gcse-maths-transformation-a.htm

Thank you so much ! Much appreciated

 

[♣♠ Magnanimous ♣♠]

no probs.

Thank you so much ! Much appreciated

 

[ahmadumar]

HOWWWWW

i explained this one somewhere before

 

[shoaib672002]

i explained this one somewhere before

well i know that volume of sphere / vol of cyinder *100 but then what

 

[ahmadumar]

well i know that volume of sphere / vol of cyinder *100 but then what

substitue the radius and height of each.
simplify it. u will see the r will cancel out and give u a constant

 

[shoaib672002]

substitue the radius and height of each.
simplify it. u will see the r will cancel out and give u a constant

Pls do it and show