Calculators

Plot Cartesian, parametric, and polar expressions with an interactive canvas graph, analyze roots, derivatives and integrals, animate variables with sliders, and ask the AI assistant.

Enter any function f(x) and a point a to estimate the derivative f′(a) with the central difference method — the same routine behind the graph tangent lines.

Compute ∫[a,b] f(x) dx numerically with adaptive Simpson’s rule, with an explanation of signed area and when integrals vanish.

Find every real root of f(x) on an interval you choose, using sign-change scanning refined by Brent’s method — verified, never guessed.

A full keypad calculator: trigonometric and inverse functions with DEG/RAD modes, logarithms, powers, roots, and constants — with honest error messages instead of silent NaN.

Plot 3D surfaces like x²+y² or sin(√(x²+y²)). Drag to rotate, scroll to zoom, and adjust the mesh detail — rendered live on canvas with honest gaps where the function is undefined.