d³y d²y, dy 4- + + 26 = x3 – 3 dx3 dx² dx

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Find the complementary solution of the queation.

The given differential equation is:

\[
\frac{d^3y}{dx^3} - 4\frac{d^2y}{dx^2} + \frac{dy}{dx} + 26 = x^3 - 3
\]

This is a third-order linear differential equation, where:
- \(\frac{d^3y}{dx^3}\) is the third derivative of \(y\) with respect to \(x\).
- \(\frac{d^2y}{dx^2}\) is the second derivative of \(y\) with respect to \(x\).
- \(\frac{dy}{dx}\) is the first derivative of \(y\) with respect to \(x\).
- The terms on the left side represent the differential operator acting on \(y\).
- The right side, \(x^3 - 3\), is a polynomial function of \(x\). 

This equation could be used to model phenomena in various fields such as physics or engineering where third-order processes are involved.
Transcribed Image Text:The given differential equation is: \[ \frac{d^3y}{dx^3} - 4\frac{d^2y}{dx^2} + \frac{dy}{dx} + 26 = x^3 - 3 \] This is a third-order linear differential equation, where: - \(\frac{d^3y}{dx^3}\) is the third derivative of \(y\) with respect to \(x\). - \(\frac{d^2y}{dx^2}\) is the second derivative of \(y\) with respect to \(x\). - \(\frac{dy}{dx}\) is the first derivative of \(y\) with respect to \(x\). - The terms on the left side represent the differential operator acting on \(y\). - The right side, \(x^3 - 3\), is a polynomial function of \(x\). This equation could be used to model phenomena in various fields such as physics or engineering where third-order processes are involved.
Expert Solution
Step 1

given differential equation isd3ydx3-4d2ydx2+dydx+26=x3-3for complemantry solution of given differential equation d3ydx3-4d2ydx2+dydx+26=0we take dnydxn=mnfrom given differential equation ,we getm3-4m2+m+26=0now factorize the equation(m+2)(m2-6m+13)=0m+2=0m=-2m2-6m+13=0m=-6±36-522=-6±4i2=-3±2i  

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