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Math Help - Solve for x & y

  1. #1
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    Solve for x & y

    Need your help folks

    (3 + j2)(-6 + j)=(x + jy)(-2 + j4)
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by neoza View Post
    Need your help folks

    (3 + j2)(-6 + j)=(x + jy)(-2 + j4)
    <br />
(3+2\bold{j})(-6+\bold{j})=-18-2 -12\bold{j} +3\bold{j} = -20-9\bold{j}<br />

    and (assuming x and y are real:

    <br />
(x + y\bold{j})(-2 + 4\bold{j})=-2x-4y -2y \bold{j} +4x \bold{j}=-2(x+2y)+2(2x-y)\bold{j}<br />

    Now equate real and imaginary parts to get:

    <br />
x-2y=10<br />

    and:

    <br />
4x-2y=-9<br />

    and now solve the simultaneous equations.

    RonL
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