Results 1 to 8 of 8

Math Help - Matrix transformation

  1. #1
    Senior Member
    Joined
    Oct 2009
    Posts
    459

    Matrix transformation

    I am having trouble with part c.
    Attached Thumbnails Attached Thumbnails Matrix transformation-8.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    A Plied Mathematician
    Joined
    Jun 2010
    From
    CT, USA
    Posts
    6,318
    Thanks
    4
    Awards
    2
    I think that what's being asked for is to compute the following multiplication, to start:

    \left[\begin{matrix}1 &-1\\ 2 &-2\end{matrix}\right]\left[\begin{matrix}x\\ mx+c\end{matrix}\right].

    Once you get that multiplication, what do you suppose you should do next?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Oct 2009
    Posts
    459
    I think it is done like parts a and b but there is much more work.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    A Plied Mathematician
    Joined
    Jun 2010
    From
    CT, USA
    Posts
    6,318
    Thanks
    4
    Awards
    2
    Well, show me how you did part b, for example, and what work you've done on part c.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,725
    Thanks
    1478
    Yes, c is done exactly like a and b. I think if you try to write both components after your multiplication as "Ax+ B", you will notice an easy relation between the two components.
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Senior Member
    Joined
    Oct 2009
    Posts
    459
    I have chosen (x, mx+c) and (1, m+c). Maybe I should have chosen two specific x values?
    Attached Thumbnails Attached Thumbnails Matrix transformation-8work.jpg  
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Senior Member
    Joined
    Oct 2009
    Posts
    459
    My images and being displayed too large with IE6. They are ok with Firefox. How are they for you?
    Follow Math Help Forum on Facebook and Google+

  8. #8
    Senior Member
    Joined
    Oct 2009
    Posts
    459
    I've done far more work than is required. Only the top line is needed. y=mx+c maps to y=2x.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Matrix transformation 2
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: November 23rd 2011, 05:35 AM
  2. Matrix Transformation
    Posted in the Advanced Algebra Forum
    Replies: 4
    Last Post: June 2nd 2011, 05:08 AM
  3. Matrix transformation
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: August 3rd 2010, 06:04 AM
  4. Matrix Transformation
    Posted in the Advanced Algebra Forum
    Replies: 0
    Last Post: July 2nd 2009, 11:17 PM
  5. Matrix Transformation in 2D
    Posted in the Advanced Algebra Forum
    Replies: 0
    Last Post: December 14th 2008, 04:28 AM

Search Tags


/mathhelpforum @mathhelpforum