LETS REVISE FOR MATHS PAPER 4

[XPFMember]

if u have any doubts in any topic share it why not revise for paper 4 NOW!!!DONT WAIT HURRY UP START SOME TOPIC!
I can ensure u help in any topic

 

[shalado95]

Well... I would like to join in...!
Lets start! =D

 

[XPFMember]

thanks which topic u think should we start which u feel the hardest

 

[XPFMember]

dont waste time its too late at night be frank to tell any topic

 

[Ahmed-Azurus]

graph of functions like the one which came in june o9 for 3 marks

 

[shalado95]

transformation!!

Okiee.... I usually got problems with finding the matrix for Strech and shear

 

[shalado95]

graph of functions like the one which came in june o9 for 3 marks

I agree with you... they are kind of tricky... but the only way to do them is to analyse and understand the question...! U can't really revise it!! The only thing u can do is practice!

 

[XPFMember]

graph of functions like the one which came in june o9 for 3 marks

to solve any eqn. just draw the 2 lines solution will be the intersecting points.one tip is some times for eqn given in the question 4 a graph and they giv u a new eqn to solve which might slightly differ in that case rearrange the eqn. to make one side same and draw the line 4 the other eqn u get and then intersecting points..

 

[XPFMember]

transformation!!

Okiee.... I usually got problems with finding the matrix for Strech and shear

The matrix for shear s.f takes place of zero if invariant line is x axis then change will be in the column for y coordinate and vice versa.same for shear but sd will take place of 1
2remember this just remember if we arrange shear & stretch alphabetically shear comes first & even 0 comes before 1 so relation of zero and shear

 

[XPFMember]

u know we can have a negative sf for shear and stretch if not let me know,will explain it to u!

 

[shalado95]

transformation!!

Okiee.... I usually got problems with finding the matrix for Strech and shear

The matrix for shear s.f takes place of zero if invariant line is x axis then change will be in the column for y coordinate and vice versa.same for shear but sd will take place of 1
2remember this just remember if we arrange shear & stretch alphabetically shear comes first & even 0 comes before 1 so relation of zero and shear

I made life easier for myself! =D
Stretch!
If y is invariant... or if x it changing... the matrix will be
K O
O L
where K is the stretch factor!! and L = 1 and 0 = 0

But if x is invariant line.... or y is changing
L O
O K

same values applied!

 

[shalado95]

Well I donno... if I'm right...but it works! =$

As for shear

its
L O
K L
in case of Y invariant

and

L K
O L
in case of x invariant!

 

[shalado95]

But thankoooo sooo much Math_angel!!U truly r one! =D

 

[XPFMember]

Shear formula for s.f is => dist. point moves due to shear/dist. of that point from invariant line
dist. point moves due to shear : always move from object to image now see if it is +ve or -ve (+ve is up or right movement and -ve is down or left movement)
dist. of that point from invariant line:always move from invariant line to the point now check whether its positive or negative then use calc. to find out final ans. putting signs appropriately
The same applies for stretch dont forget to go from invariant line to point

 

[hamza96]

Guys m sitting for nov 41 on 31st ...........nd m scared......can some 1 give me notes on probability and transformation.....ASAP.........thnnxxx