nSolve Calculator
Find a numerical solution to a single-variable equation using Newton's method or the secant method. Enter an equation, choose a starting value, and review the root, residual, and convergence details.
Type an equation in x, such as x^3 - x - 2 = 0.
Select Newton or Secant and provide starting values.
See the numerical solution, residual, and iteration count.
Use x as the variable. Supported functions include sin, cos, tan, asin, acos, atan, sqrt, abs, exp, log, log10, floor, ceil, and round. Use ^ for powers and constants pi and e. Examples: cos(x) = x, x^2 - 5 = 0, or exp(x) - 3x = 0.
This calculator searches for one real numerical root near the starting value. Different starting values may lead to different roots. Some equations may fail to converge, may have no real solution, or may require a better initial guess.
What does nSolve mean?
nSolve means numerical solve. It estimates a solution when an exact symbolic answer is unavailable or inconvenient.
Why can different guesses return different roots?
An equation may have several roots. Numerical methods normally converge to a root near the supplied starting value.
What should I do if the solver does not converge?
Try another initial guess, switch methods, increase the iteration limit, or check that the equation is continuous near the expected root.
Results are estimates generated locally in your browser using standard mathematical formulas. They are for informational and educational purposes only and are not a substitute for verification in coursework, examinations or professional contexts requiring certified accuracy. VisionVix accepts no liability for decisions based on this tool's output.
This calculator provides numerical estimates for educational and analytical use. Verify important results with an independent method, especially for engineering, scientific, or financial decisions.
