Qualification > Math

TRansformations

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shan2391:

--- Quote from: eddie_adi619 on May 17, 2009, 12:37:39 pm ---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

--- End quote ---
thanks eddie i got it rep for u.

Ghost Of Highbury:
hey thanks a lot shan....

@priceless and reishamix

i wud like to learn the base vectors method ..plzz.

it wud very kind of u to teach me..
thank you

Ghost Of Highbury:
can someone plzz teach me base vectors..!!

reishamix:
draw like a sketch of an axis
mark a point "i" wid de coordinates (1,0)
and "j" wid de coordinates (0,1)

thts the base vector...
theyr written like (1 0)
                       (0 1) like any coordinates

and whn they ask u to change the object into the transformation (0 1)
                                                                                        (1 0)
u simply change the coordinates on "i" and "j"
and u knw if its a reflection , rotation or wtevr!!

reishamix:
theyr easier to use
and very simple
i cant draw em here gimme ur email adress
and ill draw em on msn

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