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Differential Equations 7 Online
OpenStudy (anonymous):

need help solving a linear second order differential equation

OpenStudy (anonymous):

http://tinypic.com/r/2vrs96x/8 I don't see how substituting equation 5.85 and 5.86 into 5.84 will help solve the differential equation and lead to 5.87

OpenStudy (anonymous):

you do second derivative of x1 using the expression of x1 in 5.87, and then you will find 5.85 and 5.86 can help you simplify your answer of x1''. Calculate x1''+x1 and you will find the result is exactly same as 5.84. It just provides you the answer rather than show the process.

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