Algebra

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How would I write a matrix equation for...


0.2x+0.04y-0.2z=-.03

1.1x-0.6y+0.7z=0.5

0.25x+0.3y-0.35z=0.1

Would you be able to explain WHY you are doing your particular steps (my book offers explanations for similar problems, but I do not understand why each step takes place)

Thanks for your help

~Shel

  • Algebra -

    you would have a 3x3 matrix
    .2 .04 .2
    1.1 .5 .7
    .25 .3 35
    multiplied by the column matrix
    x
    y
    z
    and equal that to the column matrix

    .03
    .5
    .1

    I assume you know how to multiply one matrix by another.

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