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Math Help - Particular Integral

  1. #1
    Junior Member
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    Particular Integral

    I have d^2x/dt^2+2dx/dt-2=e^(-t) and I have found CF = A+Be^(-2t)

    I need to find the PI, usually I differentiate everything until you have a constant on the right or with an exp I would set x= e^(-t)v(t) but neither seems to work, could someone help me with the method, thanks
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  2. #2
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    Your guess for a particular solution is incorrect. What is the homogenous solution to: x''+2x'=e^{-t}+2?
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