Equation Solver (Root Finder)
Solve any equation f(x) = 0 numerically on an interval β finds all sign-change roots with bisection and Brent-style refinement.
How to use the Equation Solver
- Enter or select: f(x) = 0, Search from, Search to.
- The results (Roots found) are calculated instantly as you type.
- Use βCopy linkβ to share the calculation with the same input values.
Formula
- Bisection: halve [a, b] while f(a)Β·f(b) < 0
About this tool
Write the equation as f(x) = 0 (e.g. cos(x) - x for cos x = x). Roots where the curve only touches zero without crossing may be missed.