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Math Help - Derive

  1. #1
    Newbie
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    Derive

    consider the equation
    d^2(x)/dt^2= h(t)+9x

    First suppose that h(t)= 4e^-3t

    1) write down the derive command to find the general solution of equation with h(t)= 4e^-3t. hence write down the general solution of equation.

    2)A student solve this equation using CF/PI find the general solution is
    x(t)=Ae^3t + Be^-3t + 6te^-3t. assuming that your answer in part 1 is correct, determine by any suitable means whethe the student's answer is correct.

    3) find the particular solution which also satisfies the initial conditions x(0)=12 and x(0)=0
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by geo2 View Post
    consider the equation
    d^2(x)/dt^2= h(t)+9x

    First suppose that h(t)= 4e^-3t

    1) write down the derive command to find the general solution of equation with h(t)= 4e^-3t. hence write down the general solution of equation.

    Are you refering to the software package Derive?

    CB
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