Why is the solution for a second order ODE -m_{l}^{2} e^{im_{l}\phi}?

In summary, the solution for a second order ordinary differential equation (ODE) is determined by the specific form of the equation and the initial conditions. In the case of -m<sub>l</sub><sup>2</sup> e<sup>im<sub>l</sub>&phi;</sup>, this form is a result of the particular ODE being solved, which is often related to angular motion or oscillations. The exponential term arises from the fact that the solution is a complex number, and the coefficient m<sub>l</sub> represents a constant related to the system's properties. The solution for a second order ODE is derived using techniques such as substitution, integration, and algebraic manipulation. In the
  • #1
kasse
384
1
Can someone explain to me why the solution of [tex]\frac{d^{2}\Phi (\phi)}{d\phi^{2}} = -m_{l}^{2}[/tex] is [tex]\Phi = e^{im_{l}\phi}[/tex]?
 
Physics news on Phys.org
  • #2
It's not. A solution of
[tex]
\frac{d^{2}\Phi (\phi)}{d\phi^{2}} = -m_{l}^{2}\Phi(\phi)
[/tex] is [tex]
\Phi = e^{im_{l}\phi}
[/tex].
Just substitute Phi into the ODE.
 
  • #3
If I'm given the ODE, is inspection the only way to find the solution?
 
  • #4
If you have not learned to solve differential equations, yes!

If you have then you would know how to use the solutions to the characteristic equation, then you could use that method.
 

FAQ: Why is the solution for a second order ODE -m_{l}^{2} e^{im_{l}\phi}?

Why is the solution for a second order ODE in the form of -ml2 eimlφ?

The solution for a second order ordinary differential equation (ODE) is determined by the specific form of the equation and the initial conditions. In the case of -ml2 eimlφ, this form is a result of the particular ODE being solved, which is often related to angular motion or oscillations. The exponential term arises from the fact that the solution is a complex number, and the coefficient ml represents a constant related to the system's properties.

How is the solution -ml2 eimlφ derived?

The solution for a second order ODE is derived using techniques such as substitution, integration, and algebraic manipulation. In the case of -ml2 eimlφ, the solution is typically found by using the characteristic equation method, which involves solving a quadratic equation derived from the ODE. This process results in the general solution, which can then be further manipulated to fit specific initial conditions.

What does the constant ml represent in the solution -ml2 eimlφ?

The constant ml in the solution represents a property of the system being modeled by the ODE. In many cases, this constant is related to angular frequency or the mass of the object in motion. The specific interpretation of ml will depend on the context of the problem being solved.

Can the solution -ml2 eimlφ be used for any second order ODE?

No, the solution -ml2 eimlφ is specific to certain types of second order ODEs, namely those related to angular motion or oscillations. Other second order ODEs may have different forms of solutions depending on their specific characteristics and initial conditions.

Are there any real-world applications for the solution -ml2 eimlφ?

Yes, the solution -ml2 eimlφ has many real-world applications in fields such as physics, engineering, and economics. For example, it can be used to model the motion of a pendulum, the vibrations of a guitar string, or the behavior of a stock market index. The specific application will depend on the problem being solved and the properties of the system being modeled.

Back
Top