Numerical Approximations - Euler's Method

In summary, the conversation discusses a problem involving finding a critical value of α in a given interval that separates converging and diverging solutions. The individual was able to draw a directional field and determine regions with positive and negative slope, but is unsure of the meaning of the question and asks for additional hints. It is clarified that converging solutions refer to arrows going together while diverging solutions refer to arrows going apart. The conversation ends with a request for a specific curve that separates these solutions.
  • #1
theBEAST
364
0

Homework Statement


Here is the problem
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The Attempt at a Solution


I was able to draw the directional field and found which regions had a positive or negative slope. However I don't get what the question means by "Observe that there is a critical value of α in the interval 0 ≤ α ≤ 1 that separates converging solutions from diverging ones". What are converging and diverging solutions?

Additional hints are welcome :)
 
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  • #2
Looking at your direction field, you should be able to see that some of the arrows seem to be going "together" while others are going "apart". The first are "converging" and the second "diverging". There should be some specific curve separating them.
 

Related to Numerical Approximations - Euler's Method

1. What is Euler's method used for?

Euler's method is a numerical approximation technique used to estimate the solution of a differential equation. It is often used when the equation cannot be solved using traditional analytical methods.

2. How does Euler's method work?

Euler's method works by breaking down a differential equation into smaller intervals and approximating the solution at each interval using the slope of the equation at that point. By repeating this process, a numerical solution can be obtained.

3. What are the limitations of Euler's method?

Euler's method is a first-order approximation, which means it may not be accurate when the interval size is too large. It also assumes a constant slope between two points, which may not always be the case.

4. How can the accuracy of Euler's method be improved?

The accuracy of Euler's method can be improved by decreasing the interval size and using a smaller time step. Other more advanced numerical methods such as Runge-Kutta methods can also be used to improve accuracy.

5. In what other fields is Euler's method commonly used?

Euler's method is commonly used in physics, engineering, and other scientific fields where differential equations are present. It is also used in computer graphics and simulations to model continuous motion and changes.

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