Norwin Dole's question at Yahoo Answers about a differential equation

In summary, we can solve the first order differential equation ye^(2x) dx = (4+e^(2x))dy by using separation of variables and obtaining the general solution y=C_1\left(\sqrt{4+e^{2x}}\right).
  • #1
Fernando Revilla
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Here is the question:

How to obtain the general solution of ye^(2x) dx = (4+e^(2x))dy?
Separation of Variables - First Order Differential Equation
Please show solutions. Thanks :D

Here is a link to the question:

How to obtain the general solution of ye^(2x) dx = (4+e^(2x))dy? - Yahoo! Answers

I have posted a link there to this topic so the OP can find my response.
 
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  • #2
We can solve it by separation of variables:

[tex]\dfrac{dy}{y}=\dfrac{e^{2x}\;dx}{4+e^{2x}}[/tex]

Integrating both sides:

[tex]\ln |y|=\dfrac{1}{2}\ln|4+e^{2x}|+C=\ln \sqrt{4+e^{2x}}+C[/tex]

Equivalently,

[tex]y=C_1\left(\sqrt{4+e^{2x}}\right)[/tex].
 

Related to Norwin Dole's question at Yahoo Answers about a differential equation

1. What is a differential equation?

A differential equation is an equation that involves an unknown function and its derivatives. It is commonly used in mathematics and the sciences to model relationships between variables that are continuously changing over time or space.

2. Who is Norwin Dole and what was his question about a differential equation?

Norwin Dole is a user on Yahoo Answers who asked a question about a specific differential equation. His question was about how to solve the equation and what methods could be used to do so.

3. Why are differential equations important in science?

Differential equations are important in science because they can be used to describe and predict the behavior of natural phenomena. They are commonly used in physics, engineering, and other fields to model complex systems and make predictions about their behavior.

4. What are some common methods for solving differential equations?

Some common methods for solving differential equations include separation of variables, substitution, and the method of undetermined coefficients. Other methods such as Laplace transforms and numerical techniques may also be used depending on the specific equation.

5. Can differential equations be solved analytically or numerically?

Yes, differential equations can be solved both analytically and numerically. Analytical solutions involve finding a closed-form solution using mathematical techniques, while numerical solutions use computational methods to approximate the solution. The method used depends on the complexity of the equation and the desired level of accuracy.

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