Algebra Calculators
Inequality Solver: Linear, Quadratic, Absolute Value
Solves linear, quadratic, rational, exponential, logarithmic, trigonometric, compound and numeric inequalities, and those with absolute values and roots.
Trigonometry Calculator: sin, cos, tan and Degrees to Radians
The calculator finds the sine, cosine, tangent and cotangent of an angle in degrees or radians, converts degrees to radians, shows the quadrant, signs and reduction formulas. Exact values with roots.
Exponential, Logarithmic and Trigonometric Equation Solver
The calculator solves aˣ = b, logₐx = b, sin x = a, cos x = a and tan x = a with exact answers for standard values.
Biquadratic Equation Solver
The calculator solves the biquadratic equation ax⁴ + bx² + c = 0 with the substitution t = x², step by step.
Cubic Equation Solver
The calculator solves the cubic equation ax³ + bx² + cx + d = 0: rational root theorem, synthetic division, Cardano's formula.
System of Linear Equations Solver: Cramer, Gauss, Inverse Matrix
The calculator solves systems of 2 and 3 linear equations by Cramer's rule, Gaussian elimination and the inverse matrix method with exact fractions.
Linear Equation Solver
The calculator solves the linear equation ax + b = cx + d step by step: moving terms, combining like terms and checking the answer.
Quadratic Equation Solver with Steps
The calculator solves ax² + bx + c = 0 using the discriminant: exact roots with simplified radicals, complex roots and a check with Vieta's formulas.
Arithmetic Sequence Calculator
The calculator finds the n-th term, the common difference and the sum of the first n terms of an arithmetic sequence from any known data and checks whether a number is a term. Step-by-step solution.
Geometric Sequence Calculator
The calculator finds the n-th term, the common ratio, the sum of the first n terms of a geometric sequence and the sum of an infinite geometric series. Exact answer and step-by-step solution.
Logarithm Calculator: log, ln
The calculator finds the logarithm to any base, the natural logarithm ln and the common logarithm log: the exact value when possible, otherwise an approximation. Step-by-step solution.
Online Graphing Calculator
Online function grapher: up to three functions on one plot, zeros, intersection points and a table of values. Polynomials, fractions, roots, absolute value, logarithms, sine and tangent.
Number Sequence Calculator: Find the Pattern and Next Terms, Fibonacci
Find the pattern and next terms of a sequence, and Fibonacci numbers, with the solution.
Function Analysis Calculator with Graph
Complete step-by-step function analysis: domain, symmetry, zeros, asymptotes, derivative, extrema, concavity, inflection points and the graph. Polynomials and rational functions.
Fibonacci Calculator: Sequence, Fₙ and Sum
The sequence from F₀ to Fₙ, the exact value of Fₙ and the sum of the first terms, with the solution.
Polynomial Equation Solver up to Degree 10: All Roots
Quartic equations and polynomials up to degree 10: real and complex roots with multiplicity.
Sum of a Sequence Calculator: Squares, Cubes and Other Series
The sum of the first n terms of common sequences by closed formulas, with an exact result and steps.
General Term of a Sequence Calculator: nth Term Formula
A formula for the n-th term from the first terms of a sequence, with a check and the next terms.
Radical Equation Calculator with Domain and Root Check
Solve equations with roots: the conditions, raising to a power and a check of each root, step by step.
Solve for a Variable Calculator: Isolate a Variable in a Linear Equation
Isolate the chosen variable in a linear equation, expanding brackets and moving terms step by step.
System of Inequalities Calculator with a Number Line
Solve systems of linear, quadratic and rational inequalities in one variable with a number line.
Graphing Linear Inequalities Calculator: Region and Vertices
The solution of a system of linear inequalities in x and y on the plane, with the vertices of the region.
Absolute Maximum and Minimum Calculator on an Interval
The maximum and minimum of a function on a closed interval: the derivative, critical points and a graph.
Function Period and Range Calculator
The smallest period of a function and an estimate of its range, with a graph and the solution.
Simplify Expressions Calculator: Expand and Combine Like Terms
Expand brackets, combine like terms and cancel fractions in expressions with letters.
Nonlinear Equation and System Solver
Solve any equation on an interval and a system of two nonlinear equations.
Cartesian and Polar Converter: Points and Equations
Convert points and equations between Cartesian and polar coordinates with a solution. Circles, lines and other curves.
Truth Table Generator
Build the truth table of a logical expression with intermediate columns, the order of operations, canonical DNF and CNF.
Square Root and Nth Root Calculator
The calculator finds square roots, cube roots and roots of any index, simplifies radicals and shows a step-by-step solution.
Exponent Calculator Online
The calculator raises whole and decimal numbers to any power, including negative exponents, with an exact result and a step-by-step solution.
Proportion Calculator: Solve for x
The calculator solves a proportion a/b = c/d, finds the unknown term by cross-multiplication and shows the solution with a check.
Scientific Notation Converter: a · 10ⁿ and Back
Convert a number to scientific notation and back: 0.00052 = 5.2 · 10⁻⁴. Step-by-step solution.
Angle Converter: Degrees, Radians, Arcminutes, Gradians
Angle converter: degrees, arcminutes, arcseconds, radians, gradians and turns. Conversion with a solution and a table.
Slope Calculator: Slope of a Line Through Two Points
Slope and angle of a line through two points, the equation y = mx + b and percent grade, with the solution.
Trigonometric Values Table
Exact sine, cosine, tangent and cotangent of the main angles from 0° to 360°.
Algebra calculators help with the topics of grades 7–11: equations, inequalities, sequences, logarithms, trigonometry and functions. Each calculator does not just give the answer but shows a detailed step-by-step solution, the way it is written in a notebook.
What you can solve
- Equations and inequalities — linear, quadratic, biquadratic, cubic, simple exponential, logarithmic and trigonometric equations, systems of linear equations.
- Arithmetic and geometric sequences — the n-th term, the common difference or ratio, the sum of the first n terms, the sum of an infinite geometric series.
- Logarithms — the exact value when the number is a power of the base, an approximation with the change of base formula; natural and common logarithms.
- Trigonometry — sine, cosine, tangent and cotangent of an angle in degrees or radians, unit conversion, reduction formulas.
- Graphing — up to three functions on one picture with zeros, intersection points and a table of values.
- Function analysis — a complete analysis of a polynomial or a rational function: domain, asymptotes, extrema, inflection points and the graph.
Numbers can be entered as fractions (1/3), roots (√2) and powers (2^5), functions in the usual notation: x^2 − 3x + 2, (x + 1)/(x − 2), sin 2x.