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Simple math question?

I am doing a tutorial question and i cant figure out how to get from this step to the next:

1 = A.s.(s+1/t) + t(s+1/t) + t^2s^2

to get

A = -t^2

If someone could do the step in between for me and help me, i just cant figure it out

2 Answers

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  • M3
    Lv 7
    9 years ago
    Favorite Answer

    1 = A(s² +s/t) + ts + 1 + t²s²

    1 = A(s² +s/t) + 1 + t²(s² + s/t)

    A(s² +s/t) = -t²(s² + s/t)

    A = -t²

    --------

  • Anonymous
    9 years ago

    1=As^2 + As/t + st + 1 + s^2.t^2

    0=A(s/t + s^2) + t^2(s/t + s^2)

    A(s/t + s^2) = -t^2(s/t + s^2)

    A=-t^2

    You were missing an important dot in the question.

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