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Math Help - Geometry... another sos...

  1. #1
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    Geometry... another sos...

    Hi There;

    Help.. help...

    Find the 3x3 matrices that represent the following transformation of 2D space:

    a) A rotation of -90 degrees about the origin followed by a translation of (3, -4)
    b) A translations of (3, -4) followed by a rotaion of -90 about the origin
    c) A rotation of -90 degrees abt the point (3, -4)
    b) Find the image of A(1,2) under the transformation (a), (b) and (c) respectively.

    Thank you.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by eureka View Post
    Hi There;

    Help.. help...

    Find the 3x3 matrices that represent the following transformation of 2D space:

    a) A rotation of -90 degrees about the origin followed by a translation of (3, -4)
    b) A translations of (3, -4) followed by a rotaion of -90 about the origin
    c) A rotation of -90 degrees abt the point (3, -4)
    b) Find the image of A(1,2) under the transformation (a), (b) and (c) respectively.

    Thank you.
    Are you sure you are asked to find 3x3 matrices to represent these transformations?

    RonL
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  3. #3
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    yes.. is 3x3...
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  4. #4
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by eureka View Post
    yes.. is 3x3...
    In that case, what axes are the 90 degree rotations about?

    -Dan
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