Qualification > Math

TRansformations

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Priceless:

--- Quote from: eddie_adi619 on May 17, 2009, 12:54:28 pm ---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

--- End quote ---

Lol ya sure np. umm ok here v go.

Reflection:

1. reflection in ml y=x it's (0 1)
                                   (1 0)

2. refelction in ml y=-x itz (0 -1)
                                    (-1 0)

3. refelction in x-axis itz (1 0)
                                 (0 -1)

4. reflection in y-axis itz (-1 0)
                                  (0  1)

Rotation

1. rotation +90 degrees(anticlockwise) around centre(0,0)  itz (0 -1)
                                                                                    (1  0)

2. rotation -90 degrees(clockwise) around centre (0,0)  itz (0  1)
                                                                               (-1 0)

3. rotation 180 degrees around centre (0,0)  itz (-1 0)
                                                                 (0 -1)

Enlargement

1. centre (0,0) wer k=scale factor, itz (k 0)
                                                    (0 k)

Shear

1. x invariant with x-axis wer k=scale factor (1 k)
                                                            (0 1)

2. y invariant with y-axis wer k=scale factor (1 0)
                                                            (k 1)

Stretch

1. x invariant with y-axis wer k=scale factor (1 0)
                                                            (0 k)

2. y invariant with x-axis wer k=scale factor (k 0)
                                                            (0 1)


phew don't LOL i no itz a lot but once u no dem itz rely easy. u can du ur sums very easily den widout doin da point co ordinate thng. once u no wat da transformation is eddie_adi619 u ll no wat da matrix is also. gud luck 2 all 4 ur xams hope v all du well.

Priceless:
i hope u understand dem n hope i helped. gud luck evry1!!! ;)

sweetsh:
NOO!

I was just typing those things when you posted it!

Priceless:
LOL sory. can u just explain me da shear n stretch base vectors. i no dem but dont get dem....pls help sweetsh.

SGVaibhav:
have to say lol  ;D

when it is parallel to x axis, then y axis is parallel
and vice versa

but then howcome
how come in shear

when it is parallel to x axis, x axis is invariant. how :S??????

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