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Math Help - with this differntial equation problem

  1. #1
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    with this differntial equation problem

    1. Verify that the function
    y(t) = 9e^(−9t) / 10 − e^(−9t)
    is a solution of the differential eqiuation d/dt y(t) = −y(t)(9 + y(t)).
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  2. #2
    Master Of Puppets
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    differenitate y(t) and sub back into the equation to check.
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