Wednesday, August 20, 2014

// // 4 comments

3x3 Matrix Multiplication Using Pascal Programming



4 comments:

  1. When I do the multiplication, I get
    [30 23 19 ]
    [84 65 58 ]
    [138 107 97 ]
    What could be going on that my calculation is close but differs from yours?

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    Replies
    1. This site agrees with me:
      http://wims.unice.fr/wims/wims.cgi?session=27170A9888.1&lang=en&cmd=reply&module=tool%2Flinear%2Fmatmult.en&matA=1%2C+2%2C+3%0D%0A4%2C+5%2C+6%0D%0A7%2C+8%2C+9&matB=9%2C+7%2C+8%0D%0A6%2C+5%2C+4%0D%0A3%2C+2%2C+1&show=A*B

      Delete
    2. Hi Tom. I just rechecked the program and got the same answer as before. You can view the screenshot here - http://goo.gl/d06oNH I guess the problem is your input. Check! In this case, when prompted to enter the elements for matrix A, type 1 then press ENTER, type 2 and press ENTER, to 9. For matrix B, type 9 then press ENTER, type 8 and press ENTER, to 1. I also solved the problem manually on paper just to make sure it was correct. Also check your code.

      Delete
  2. I found the difference: I was going by your image, which has 978 instead of 987 in the top row. Funny :D

    ReplyDelete


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