Linearity of differential equation

In summary, the equation given is a linear ordinary differential equation with non-constant coefficients, but it is considered linear because the homogeneous part is linear with respect to the dependent variable. The -5 term does not affect its linearity.
  • #1
bhanesh
9
0
Friends I have one doubt

Below given equation is linear or non linear

1387027772743.jpg


:)
 
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  • #2
It's non-linear, because of the cos x coefficient. Compare it to the ODE for a pendulum, which is non-linear, but can be linearized if small deflections are assumed.
 
  • #3
bhanesh said:
Friends I have one doubt

Below given equation is linear or non linear

View attachment 64770

:)
Mathematically,the equation you wrote is considered a linear ordinary differential equation with non-constant coefficients. It is considered linear if the homogeneous part is linear with respect to the dependent variable (in this case y).
 
  • #4
But what about -5 term
 
  • #5
bhanesh said:
But what about -5 term
That's not included in the homogeneous part.
 
  • #6
Linear, because all exponents of y aren't different of +1.
 

1. What is linearity?

Linearity refers to the property of a mathematical equation or system that follows the principle of superposition. This means that the overall response of the system is a linear combination of the individual responses to each input.

2. How is linearity related to differential equations?

In differential equations, linearity refers to the property of an equation where the dependent variable and its derivatives appear only in the first degree. This allows for the use of linear operators and techniques to solve the equation.

3. What is a linear differential equation?

A linear differential equation is an equation that can be written in the form of a linear combination of the dependent variable, its derivatives, and the independent variable. This means that the equation is linear with respect to the dependent variable and its derivatives.

4. How can I determine if a differential equation is linear or not?

To determine linearity, you can check if the equation follows the principle of superposition. If the equation is in the form of a linear combination of the dependent variable and its derivatives, it is a linear differential equation. Otherwise, it is non-linear.

5. What are the benefits of working with linear differential equations?

Linear differential equations have well-defined properties that make them easier to solve compared to non-linear equations. They also have well-known solutions and can be used to model a wide range of physical systems and phenomena.

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