Math for high school and university students — with step-by-step solutions and theory
Matrix Calculator (step by step)
Determinant, inverse, rank, multiplication and linear systems — with the full solution chain, like on paper.
Equation Solver (with steps)
Linear and quadratic equations, systems of equations — with discriminant and detailed explanation.
Function Grapher
Plot graphs: sliders for y = kx + b, exact zeros, vertex and intersection points, intervals of increase and sign.
3D Function Grapher
Surface z = f(x, y): type a formula and spin it with your mouse. Height coloring, zoom, all in the browser.
Derivatives
The derivative of a function with a detailed step-by-step breakdown, a graph with extrema and the three meanings of the derivative.
Antiderivative and indefinite integral
The indefinite integral (antiderivative) broken down step by step: table, substitution, by parts. Graph and table.
Definite integral
The definite integral as the area under the graph: shaded area, Newton–Leibniz formula, explanation.
Area between curves
Area of a region between graphs: intersection points, a drawing and a step-by-step solution — the integral and an exact answer as a fraction, with a root, e or π.
Fraction Calculator (with steps)
Fractions and mixed numbers: whole expressions, reducing, a common denominator for several fractions, GCD and LCM — step by step.
Trigonometry
Values of expressions, simplification, equations and the right triangle, explained step by step.
Percentage Calculator
All typical percent problems — with the formula and an explanation of every calculation.