Solving Implicit O.D.E: sin(y) + xy - x^3 = 2 | 2nd Order ODE Help

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In summary, an O.D.E, or Ordinary Differential Equation, is a mathematical equation used to describe the change of a variable over time. It is important to solve O.D.Es in order to understand and make predictions about a system's behavior. There are various methods for solving O.D.Es, including analytical, numerical, and qualitative methods. The method used depends on the complexity of the equation and the desired level of accuracy. There are many tools and software available for solving O.D.Es, but it is important to choose an appropriate tool for the complexity of the equation and ensure the accuracy of the results.
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AST3019
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Is, sin(y) + xy - x^3=2, an implicit soln to the 2nd order ODE y''= {6xy' + (y')^3 * sin(y) - 2(y')^2}/ (3x^2 - y)?
 
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  • #2
Have you tried it? If [itex]sin(y) + xy - x^3=2[/itex] then [itex]cos(y)y'+ y+ xy'- 3x^2= 0[/itex]. Differentiating again, [itex]-sin(y)(y')^2+ cos(y)y''+ 2y'+ xy''- 6x= 0[/itex].

You can you those to see if the differential equation is satisfied or not.
 
  • #3
thanks.
 

1. What is an O.D.E?

An O.D.E, or Ordinary Differential Equation, is a mathematical equation that describes how a variable changes over time. It involves the derivative of a function and is commonly used in many scientific fields, such as physics, engineering, and biology.

2. Why is it important to solve O.D.Es?

Solving O.D.Es allows us to understand the behavior of a system and make predictions about its future state. This is crucial in many scientific fields as it helps us develop models and make informed decisions.

3. What are the different methods for solving O.D.Es?

There are various methods for solving O.D.Es, including analytical, numerical, and qualitative methods. Analytical methods involve finding exact solutions using algebraic manipulations, while numerical methods use algorithms to approximate solutions. Qualitative methods focus on understanding the behavior of the system without finding a specific solution.

4. How do I know which method to use for a specific O.D.E?

The method used to solve an O.D.E depends on the complexity of the equation and the desired level of accuracy. Analytical methods are preferred for simple equations with known solutions, while numerical methods are better suited for more complex equations. Qualitative methods are useful for gaining a general understanding of the behavior of the system.

5. Are there any tools or software available for solving O.D.Es?

Yes, there are many tools and software available for solving O.D.Es. These include popular mathematical software such as MATLAB and Mathematica, as well as online calculators and O.D.E solvers. It is important to choose a tool that is appropriate for the level of complexity of the O.D.E and to ensure the accuracy of the results.

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