Qualification > Math

TRansformations

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joel:
How do i find the matrix which represents a transformation

shan2391:
i have the same problem refrence Q7b OCt08

zara:
very simple....
first draw the unit matrix n den watevr matrix is given draw dat...n den chk wat kinda transformation is hppning between the unit matrix n the one given...

hope u get it.. :)

shan2391:
zara can u plzz solve the Q7b in oct08

Ghost Of Highbury:
first write down 2 sets of co-ordinates from triangle T in a matrix form
then multiply it with the unknown matrix and equate it to the matrix form of two corrseponding sets of co-ordinates of the image i.e R

(2   8 ) *   (w  y)     (-4  -4)
(4   4)      (x  z)  = (-2  -8)

therefore you can find the values of w,x,y and z by multiplying (-4  -4) with the inverse of (2  8 )
                                                                                      (-2  -8)                           (4  4)


=> so the answer is (0  -1)
                            (-1  0)

plz infrm me if u didn't understand...as i am available anytime in studentforums...
Good luck

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