Solving 4th Order Differential Equation: ay + by'''' = c( d + e^ikx )

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SUMMARY

The discussion centers on solving the 4th order differential equation represented as ay + by'''' = c( d + e^ikx ). The equation is confirmed to be linear with constant coefficients, allowing for a systematic approach to find solutions. The key step involves identifying the roots of the characteristic polynomial br4 + a = 0, which is essential for determining the general solution for y(x).

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4th order differential equation :

ay + by'''' = c( d + e^ikx )

Given a, b, c, d, k are constants and i = sqrt(-1)

Is there any solution for y(x) ?
 
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It is possible to solve it. The equation is linear with constant coefficients. Just need to identify the roots of

br4 + a = 0.
 

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