Random Forced Exponential Diff Equations

In summary, the conversation discusses a homework problem involving a forced exponential differential equation and three given plots of solutions. The problem requires finding the formula for a parabola that the three plots eventually merge into. The relevant equation for this problem is y(t) = y(0)e^(-rt) + \int_0^t e^(-rs)f(s)\,ds, which can be used to solve the equation if necessary.
  • #1
Gspace
18
0

Homework Statement



I was given three plots of solutions for a forced exponential diffeq: y'[t]+1.85 y[t]=0.7t^2
with starter values on y[0] equal to -6, 0,and +7

The three plots eventually merge, how do I give the formula for this parabola?



Homework Equations



E^(-r t) starter1+E^(-r t) Integral, of E^(rs) f ds
 
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  • #2
The solution isn't a parabola. And you relevant equation isn't correct. It should be

[tex]y(t) = y(0)e^{-rt} +\int_0^t e^{-rs}f(s)\,ds[/tex]

If you don't know how to solve the equation for yourself you can just plug your information into this equation. (It is common usage to use f(t) instead of f[t] for function notation.)
 

1. What are "Random Forced Exponential Diff Equations"?

Random Forced Exponential Diff Equations are a type of differential equation that involves a random component and an exponential function. They are commonly used in mathematical modeling to describe systems that have both deterministic and random components.

2. What applications use Random Forced Exponential Diff Equations?

Random Forced Exponential Diff Equations have a wide range of applications in fields such as biology, chemistry, physics, economics, and engineering. They are particularly useful in modeling complex systems that involve both deterministic and random elements.

3. How are Random Forced Exponential Diff Equations solved?

There is no one general method for solving Random Forced Exponential Diff Equations, as the approach will depend on the specific equation and its parameters. However, some common techniques include using numerical methods, series solutions, and Laplace transforms.

4. What are some challenges in working with Random Forced Exponential Diff Equations?

One of the main challenges in working with Random Forced Exponential Diff Equations is the complexity of the equations themselves, which can make them difficult to solve analytically. Additionally, the random component adds another layer of uncertainty and can make it challenging to accurately predict the behavior of the system.

5. How are Random Forced Exponential Diff Equations used in real-world situations?

Random Forced Exponential Diff Equations are used in real-world situations to model and predict the behavior of complex systems. For example, they can be used in economics to model stock prices or in biology to study population dynamics. They are also used in engineering to design and optimize systems that have both deterministic and random elements.

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