Differential equation involving a time series

In summary, a differential equation involving a time series is a mathematical equation used in statistics to describe the relationship between a time-dependent variable and its rate of change. They are commonly used in time series analysis for prediction, trend identification, and decision making. There are different types of differential equations used, including ODEs, PDEs, and SDEs, which can be solved analytically or numerically. However, there are limitations to using differential equations, such as assuming a linear relationship, requiring a significant amount of data, and potential inaccuracies due to data limitations.
  • #1
AbusesDimensAnalysis
1
0
Hey all, it's been awhile since done any calculus or DE's but was trying out some modelling (best price price per item for bulk value deals as a function of time and amount), in the last line i have f(n,t) implicitly.

Any pointers or techniques for solving such things?

241165
 

Attachments

  • 1554151800007.png
    1554151800007.png
    10.7 KB · Views: 345
Physics news on Phys.org
  • #2
Why is it implicitly? You have ##f(n,t)=f(n,0)e^{kt} + e^{kt} -dn^2## if I saw this correctly (it's a bit tiny for my old eyes). Looks as if you only have to figure out the initial conditions.
 

FAQ: Differential equation involving a time series

1. What is a differential equation involving a time series?

A differential equation involving a time series is a mathematical equation that describes the relationship between a variable and its rate of change over time. It is commonly used in scientific fields such as physics, engineering, and economics to model and predict the behavior of systems that change over time.

2. How is a time series represented in a differential equation?

A time series is typically represented as a function of time, denoted by t. This function can take on various forms, such as a simple linear function or a more complex polynomial function. The variable being studied, denoted by y, is then expressed as a function of t, such as y(t).

3. What is the purpose of using a differential equation for time series analysis?

The purpose of using a differential equation for time series analysis is to model and understand the behavior of a system over time. By studying the rate of change of a variable, we can make predictions and gain insights into the underlying dynamics of the system. This is especially useful in fields where data is collected over time, such as in economics or climate science.

4. What are the key components of a differential equation involving a time series?

The key components of a differential equation involving a time series are the dependent variable (y), independent variable (t), and the derivative of the dependent variable with respect to the independent variable (dy/dt). These components, along with any constants or coefficients, make up the equation that describes the relationship between the variables.

5. How are differential equations involving time series solved?

Differential equations involving time series can be solved using various techniques, such as analytical or numerical methods. Analytical solutions involve finding an exact mathematical expression for the solution, while numerical solutions use algorithms to approximate the solution. The specific method used will depend on the complexity of the equation and the desired level of accuracy.

Similar threads

Back
Top