Solving a Simple Differential Equation: y' = (x + xy^2)

In summary, the conversation is about solving a simple differential equation y'=(x+xy^2). The solution involves integrating and using the inverse function of tangent, arctan. The question is how to simplify the solution to an equation in the form y=... and the difficulty lies in determining the bounds for x.
  • #1
S[e^x]=f(u)^n
23
0

Homework Statement


i'm trying to solve the simple differential equation y'=(x+xy^2)


2. The attempt at a solution

i get dy/(1+y^2)=xdx and then integrate over the whole thing getting the solution

arctan(y)=0.5x^2+C

my problem is how do i simply this down to an equation in the form y=...

i must be missing something
 
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  • #2
S[e^x]=f(u)^n;1635559 said:

Homework Statement


i'm trying to solve the simple differential equation y'=(x+xy^2)


2. The attempt at a solution

i get dy/(1+y^2)=xdx and then integrate over the whole thing getting the solution

arctan(y)=0.5x^2+C

my problem is how do i simply this down to an equation in the form y=...

i must be missing something
well remember that if [tex]tan(x)=y[/tex] then [tex]arctan(y)=x[/tex] does this help u? Tan and arctan are inverse functions so, tan(arctan x)=x
 
Last edited:
  • #3
but that x only valid under certain bounds right? and I'm having trouble figuring out what those are
 

What is a simple differential equation?

A simple differential equation is an equation that involves a function and its derivatives. It describes the relationship between the function and its derivatives, and is often used to model real-world phenomena.

What is the difference between a simple and a complex differential equation?

A simple differential equation is one in which the function and its derivatives are only raised to the first power. In a complex differential equation, the function and its derivatives may be raised to higher powers or may involve multiple variables.

What are the applications of simple differential equations?

Simple differential equations are used in many fields such as physics, engineering, economics, and biology to model various processes and phenomena. They are particularly useful in predicting the behavior of systems over time.

How do you solve a simple differential equation?

The solution to a simple differential equation involves finding the function that satisfies the equation. This can be done through various methods, such as separation of variables, substitution, or using an integrating factor.

What is the order of a simple differential equation?

The order of a simple differential equation is determined by the highest derivative present in the equation. For example, y' = 3x is a first-order simple differential equation, while y'' + 2y' + y = 0 is a second-order simple differential equation.

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