What is the General Solution for a Differential Equation with Complex Roots?

In summary, the General Solution to HDE is an equation used to find all possible solutions to a differential equation that describes the relationship between a function and its derivatives. It is found by using various mathematical techniques and includes constants to represent different solutions. The General Solution differs from the Particular Solution, which is a specific solution that satisfies given initial conditions. The General Solution is important because it provides a complete understanding of the function's behavior and has practical applications in various fields such as physics, engineering, and economics. These applications include predicting population growth, modeling the spread of diseases, and analyzing the behavior of physical phenomena.
  • #1
jbord39
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Homework Statement



(D^2 + 2D + 10)^2 * (D^2 - 2D -3)y = 0.

Homework Equations



D = d/dx

The Attempt at a Solution



Solving for the roots gives:

-1 + 3i, -1 - 3i <== both of multiplicity 2
and 3, -1.

So the general solution should be:

y = Ae^(3x) + Be^(-x) + Ce^(-x)cos(3x) + Dxe^(-x)cos(3x) + Ee^(-x)sin(3x) + Fxe^(-x)sin(3x)

Am I handling this correctly?

Thanks
 
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  • #2
Looks ok to me.
 
  • #3
Thanks for looking at it.
 

FAQ: What is the General Solution for a Differential Equation with Complex Roots?

What is the General Solution to HDE?

The General Solution to HDE (Homogeneous Differential Equation) is an equation that describes the relationship between a function and its derivatives. It is a way to find the solution to a differential equation that includes all possible solutions.

How is the General Solution to HDE found?

The General Solution to HDE is found by solving the equation using various mathematical techniques such as separation of variables, substitution, and integration. The solution will include constants that can take on different values to represent all possible solutions.

What is the difference between the General Solution and Particular Solution to HDE?

The General Solution to HDE includes all possible solutions to the equation, while the Particular Solution is a specific solution that satisfies the given initial conditions. The Particular Solution is found by substituting the initial conditions into the General Solution and solving for the constants.

Why is the General Solution to HDE important?

The General Solution to HDE is important because it provides a complete understanding of the relationship between a function and its derivatives. It allows for the prediction of future behavior of the function and can be applied to various real-world situations in fields such as physics, engineering, and economics.

What are some real-world applications of the General Solution to HDE?

The General Solution to HDE has many practical applications, such as predicting population growth, modeling the spread of diseases, and analyzing the behavior of electrical circuits. It is also used in fields like fluid dynamics, quantum mechanics, and thermodynamics to describe various physical phenomena.

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