# Modified Euler's Method Calculator

## Apply the modified Euler's method step by step

The calculator will find the approximate solution of the first-order differential equation using the modified Euler's method, with steps shown.

Related calculators: Euler's Method Calculator, Improved Euler (Heun's) Method Calculator

Or $y^{\prime } = f{\left(x,y \right)}$.
Or $x_{0}$.
$y_0=y(t_0)$ or $y_0=y(x_0)$.
Or $x_{1}$.

If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please write it in the comments below.

The Modified Euler's Method Calculator is an intuitive tool that allows you to approximate the solutions of differential equations with increased accuracy using the Modified Euler's Method. Our calculator has been carefully created to provide precise and quick results by applying the modified Euler's method.

## How to Use the Modified Euler's Method Calculator?

• ### Input

Enter the differential equation you have and the given initial condition. Enter the desired step size $h$ or the number of steps/iterations. Finally, enter the value at which you want to approximate the function.

• ### Calculation

After ensuring all fields are correctly filled, click the "Calculate" button.

• ### Result

The calculator will display the approximated solutions for various values of $t$ based on your input. At each step, the calculator will display the new $t$ value and the corresponding $y$ value.

## What is the Modified Euler's Method?

The Modified Euler's Method is a numerical method to approximate the solutions of ordinary differential equations (ODEs). This is an enhancement to the basic Euler's method that provides more accurate results.

In the Modified Euler's Method, the process begins by finding the approximate value of the function at the midpoint of a given interval using the Euler's method. This intermediate approximation is then used to calculate an approximation of the solution at the end of the interval.

After obtaining the intermediate approximation, the method proceeds to calculate a new slope at the midpoint of the interval. This new slope is determined using the intermediate approximation.

With this new slope, the method computes an approximation of the solution's value at the end of the interval using the Euler's method.

Basic Concept

The Modified Euler's Method computes an intermediate approximation using the initial slope, then calculates a new slope at the midpoint and, finally, an approximation at the end of the interval using the new slope.

Formula

The formula for the Modified Euler's Method is

$$y_{n+1}=y_n+hf\left(t_n+\frac{h}{2},y_n+\frac{h}{2}f\left(t_n,y_n\right)\right),$$

where:

• $y_{n+1}$ is the next value approximation.
• $y_n$ is the current value.
• $h$ is the step size.
• $t_n$ is the current time.
• $f(t,y)$ is the function that represents the differential equation. It also represents the slope of the function. For example, $f\left(t_n,y_n\right)$ is the slope of the function at the point $\left(t_n,y_n\right)$.

Method

Suppose we are given a differential equation $\frac{dy}{dt}=f(t, y)$ and the initial condition $y\left(t_0\right)=y_0$. We need to find $y\left(t_1\right)$. The steps involved in the Modified Euler's Method are:

• Interval Division. Choose a step size $h$ and divide the interval $\left[t_0,t_1\right]$ into $n$ smaller subintervals with points $t_n=t_0+nh$, where $n$ is the number of steps.
• Intermediate Approximation. At each step, calculate the intermediate approximation (the value at the midpoint of the interval) $\tilde{y}_n$ using the Euler's method:

$$\tilde{y}_n=y_n+\frac{h}{2}f\left(t_n,y_n\right)$$
• Midpoint Slope. Calculate the slope at the midpoint using the intermediate approximation:

$$s=f\left(t_n+\frac{h}{2},\tilde{y}_n\right)$$
• Final Approximation. Calculate an approximation of the solution at the end of the interval using the slope at the midpoint and the Euler's method:

$$y_{n+1}=y_{n}+hs$$

Example

Consider the first-order ODE $\frac{dy}{dt}=-2ty$ with the initial condition $y(0)=1$. We want to approximate the solution at $t=0.1$ using the Modified Euler's Method with a step size of $h=0.1$.

At $t_1=0.1$, calculate the intermediate approximation:

$$\tilde{y}_0=y_0+\frac{h}{2}f\left(t_0,y_0\right)=1+\frac{0.1}{2}f(0,1)=1+0.05\cdot(-2\cdot0\cdot1)=1$$

Now calculate the slope at the midpoint:

$$s=f\left(t_0+\frac{h}{2},\tilde{y}_0\right)=f\left(0+\frac{0.1}{2},1\right)=f(0.05,1)=-2\cdot0.05\cdot1=-0.1$$

At last, calculate the final approximation:

$$y(0.1)=y_1=y_0+hs=1+0.1\cdot(-0.1)=0.99$$

If you have more steps, repeat the process for subsequent steps until the desired endpoint is reached.

## Why Choose Our Modified Euler's Method Calculator?

• ### User-Friendly Design

With an intuitive interface, even those new to the Modified Euler's Method can easily navigate and use the calculator.

• ### Fast Calculations

Built for efficiency, our tool processes complex equations quickly saving time and effort.

• ### Versatility

Our calculator is designed to meet the different requirements of students, engineers, and researchers in different areas.

• ### Comprehensive Results

Our calculator doesn't just provide numerical results; it gives thorough solutions that help in better understanding as well as in detailed analysis.

### FAQ

#### What is the Modified Euler's Method Calculator?

The Modified Euler's Method Calculator is an online tool designed to approximate the solutions to differential equations using the Improved Euler's Method, that provides a more accurate approximation than the standard Euler's method.

#### How does the Modified Euler's Method differ from the standard Euler's?

The enhancement in accuracy comes from the fact that the Modified Euler's Method doesn't solely rely on the slope at the beginning of the interval. By using the new slope calculated at the midpoint, the method gains a more refined estimation of the solution within the interval.

#### Is the calculator suitable for complex differential equations?

Yes, our calculator is designed to handle a variety of differential equations, ranging from simple to complex. However, keep in mind that the accuracy of the results depends on factors such as step size and the nature of the equation itself.

#### How does the Modified Euler's Method handle discontinuities or singular points?

Like many numerical methods, the modified Euler method can run into problems when dealing with discontinuities or singular points. In such cases, the method may not give accurate results. Before using the method, it is desirable to analyze the nature of the equation and the discontinuity points. Alternative methods or adaptations may be required for accurate solutions in these scenarios.