1st O.D.E, homogenous but with constants

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In summary, a 1st order homogeneous O.D.E with constants is an ordinary differential equation where the highest derivative is of first order and all the terms are homogeneous functions with constant coefficients. It can be solved using the method of separation of variables and has various applications in real-world problems. Some key properties include linearity, superposition, and a unique solution for given initial conditions. A 1st order homogeneous O.D.E with constants will always have a constant solution, but the value of the constant can vary depending on the initial conditions.
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niceperson
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Homework Statement



solve: y'=(x+y-1)/(x-y-2) i.e

Homework Equations





The Attempt at a Solution



let y=vx
thus
y'=v'x+v

by substitution:

v'x+v=(1+y/x-1/x)/(1-y/x-2/x)=(1+v-1/x)/(1-v-2/x)

v'x=(1-1/x+v^2+2v/x)/(1-v-2/x)

still can't separate the variables...any ideas?

thanksx
 
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  • #2
thanks dick does work!
 
  • #3
Uh, are you sure? I tried it again after I posted, and realized I'd made a mistake and deleted the post so it wouldn't confuse anyone. Just double check, ok?
 
Last edited:

Related to 1st O.D.E, homogenous but with constants

1. What is a 1st order homogeneous O.D.E with constants?

A 1st order homogeneous O.D.E with constants is a type of ordinary differential equation (ODE) where the highest derivative is of first order and all the terms in the equation are homogeneous functions. Additionally, the coefficients of the terms in the equation are constants, meaning they do not contain any variables.

2. How do you solve a 1st order homogeneous O.D.E with constants?

To solve a 1st order homogeneous O.D.E with constants, we use the method of separation of variables. This involves separating the dependent and independent variables, and then integrating both sides of the equation. This process will result in a general solution, which can be further simplified by applying initial conditions.

3. What are the applications of 1st order homogeneous O.D.E with constants?

1st order homogeneous O.D.E with constants have various applications in real-world problems, such as in population growth models, chemical reactions, and electrical circuits. They are also used in physics and engineering to model the behavior of physical systems.

4. What are the key properties of 1st order homogeneous O.D.E with constants?

Some of the key properties of 1st order homogeneous O.D.E with constants include linearity, meaning the sum of two solutions is also a solution, and superposition, where a linear combination of solutions is also a solution. They also have a unique solution for a given set of initial conditions.

5. Can a 1st order homogeneous O.D.E with constants have a non-constant solution?

No, a 1st order homogeneous O.D.E with constants will always have a constant solution. This is because the coefficients in the equation are constants, and when we integrate the equation, the result will always contain a constant of integration. However, the constant may have different values for different initial conditions.

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