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anonymous

  • 5 years ago

find the general solution to the differential equation xy' + 18y = e^(x^18)

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  1. anonymous
    • 5 years ago
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    Use the principle of superposition, and you will find that the solution for any function that is in the form [y(t) = c1e^3t + c2e^-3t is a solution for the equation. So use a function that comes back to itself after 2 derivatives, an exponential function, and with the proper exponent e^xt , the 18 will be taken care of as well! You could use e^3t, 3e^3t, or 6e^3t, and even 9e^3t. This is assuming that this function you placed is homogenous, and g(t) = 0.

  2. anonymous
    • 5 years ago
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    i..still dont get it..

  3. anonymous
    • 5 years ago
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    Go back to your properties of Linear Homogenous Constant-Coefficient Second Order Differential Equations. You will find out how to verify a solution or derivative, to see that they are proved to be in fact what they are, and not just something made up.

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