Maths P 1.

[hussam]

Transformation
What concept is most tested from this chapter?

 

[Zishi]

Transformation
What concept is most tested from this chapter?

Rotation and Translation Matrices.

 

[hussam]

Thnx mate...

 

[M.Usman Khan]

Transformation
What concept is most tested from this chapter?

Rotation and Translation Matrices.

translation u sure....thats the most easiest thing around......

 

[hassam]

there is a easy way t learn transformation matrices.u will never need to memorise!
for e-g enlargement vid centre of enlargement (0,0)
1.select point 1,0----->image is k,0 where k k is da scale factor
2.select point 0,1------>image is 0,k
so ur matrix is (k 0)
(0 k) i have put to brackets b/c i cud not draw da matric

 

[hassam]

likewise follow da same rule for other dat is
1.select point 1,0 .get its image thru the transformation mentioned
2.select points 0,1 get its image in the same way
but NOTE

E-G 0 -1
1 0 these are the images obtained for 1,0 and 0,1 respectively (clockwise 90 0,0)
the matrix is not this
IT IS [0 1]
[-1 0]
i hope every thing is clear. note in the course we have to knw matrices for reflection Y=X,Y=-X IN THE LINE X-axis in the line y-axis
rotation only abt origin(others are IMPOSSIBLE)ENLARGEMENT ABT origin.stretch perp. to x and y axis both.shear parallel to y and x axis both.
cambridge igcse maths explains this all ( AUTHOR:KAREN MORRISON)

 

[hamid_ishfaq]

there is a easy way t learn transformation matrices.u will never need to memorise!
for e-g enlargement vid centre of enlargement (0,0)
1.select point 1,0----->image is k,0 where k k is da scale factor
2.select point 0,1------>image is 0,k
so ur matrix is (k 0)
(0 k) i have put to brackets b/c i cud not draw da matric

man this looked to me lyk supercalifraglisticexpladocious can u kindly explain it again in a more easy way??? i would be really thankful!!!

 

[habib123]

hahahhaha hamid nie one hhahahahah superaliffragilisti ahahahah

 

[hassam]

its diff to explain here.u can consult CAMBRIDGE IGCSE MATHS BOOK

 

[hamid_ishfaq]

yaar m in olevels but i think the books are the same chalo sai hai stilll thnx!!!!

 

[hamid_ishfaq]

@ habib: lol its the longest word of english having no meaning but is used symbolically to express that something is to difficult

 

[isabella]

plz help me out with math nov 2006 pap1 question no.19.....please fast!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!its urgent!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! how did we take out the value of Y?????????????????????

 

[M.Usman Khan]

plz help me out with math nov 2006 pap1 question no.19.....please fast!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!its urgent!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! how did we take out the value of Y?????????????????????

what do u find difficult in it???????????

pls explain

 

[isabella]

how to find value of Y?

 

[isabella]

also if anyone can explain me : math nov 2006 pap1 qs 20 part (c)...how to find volume of X and Y?

 

[M.Usman Khan]

how to find value of Y?

y=1/2 of reflex angle of BOD....

360-140=220
220/2=110=y

 

[M.Usman Khan]

also if anyone can explain me : math nov 2006 pap1 qs 20 part (c)...how to find volume of X and Y?

find ratio of volume of X to volume of C

subtract the Ratio of volume of X from C....that will be ratio of volume of Y

vol. of X:vol. of C
27:125

vol. of X : vol. of Y
27 : 125-27
=27 : 98

 

[isabella]

thnks...how r u preparing for maths?

 

[M.Usman Khan]

u want believe but.....i am actually reading the books all four of them to refresh my concept and then doing the papers

 

[isabella]

really thts a great idea...i should probably try it too.are u a 'A' grader?