Numerical Methods formula reference

Euler Method

Advances an ordinary differential equation solution using the current slope.

Open in editor
LaTeXy_{n+1}=y_n+h f(t_n,y_n)

Variables

  • h: step size
  • f: derivative function
  • y_n: current approximation
  • t_n: current time

How to use this formula

Advances an ordinary differential equation solution using the current slope.

Important notes

  • The method is first-order accurate.
  • Smaller steps usually reduce truncation error but increase work.

Quick example

For y′=y, h=0.1, and y0=1, y1=1.1.

Applicability, worked calculation, and verification

Assumptions and domain checks

  • The method is first-order accurate.
  • The iteration, step size, tolerance, and stopping rule must be suitable for the problem and the method must converge in the chosen region.

Worked example

Input

Output

For y′=y, h=0.1, and y0=1, y1=1.1.

Common mistakes

  • Before substituting values into Euler Method, map each variable to its definition and preserve every sign, exponent, subscript, and grouping mark.
  • Do not report a numerical approximation without a tolerance, convergence check, and an estimate of rounding or truncation error.

Continue the workflow

Use Euler Method in your own work

  1. Check the domainMatch the variables and assumptions to the problem before substituting values.
  2. Copy the exact notationPreserve grouping, signs, and exponents in y_{n+1}=y_n+h f(t_n,y_n).
  3. Edit or convertOpen the expression in the LaTeX editor, then export it for your document or web page.

Review and verification

Last reviewed: 2026-07-23

Automated quality check: Kept noindex until the missing evidence is supplied.

Formula references

Frequently asked questions

What is the Euler Method used for?

Advances an ordinary differential equation solution using the current slope.

Can I copy this formula as LaTeX?

Yes. Copy y_{n+1}=y_n+h f(t_n,y_n) or open it in the LaTeX editor.

What should I check before using it?

Confirm that each variable, unit, domain restriction, and assumption matches the problem.

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