Mathematikrechner
Berechne Brüche, Prozente, Gleichungen, Matrizen, Logarithmen, Ableitungen und Integrale mit Formeln, Rechenwegen und exakten Brüchen, soweit möglich.
29 Rechner · 205 geprüfte Beispiele
Rechner
- Grafikrechner
Mehrere Funktionen sowie Polar- und Parameterkurven zeichnen; verschieben und zoomen; Nullstellen, Schnittpunkte, Extrempunkte und Flächen finden.
- Wissenschaftlicher Taschenrechner
Tastenrechner mit Trigonometrie in Grad, Radiant oder Gon, Logarithmen, Potenzen, Fakultäten, Speicher und Rechenverlauf – mit exakten Brüchen, soweit möglich.
Arithmetik
- Bruchrechner
Addiere, subtrahiere, multipliziere und dividiere Brüche und gemischte Zahlen exakt, kürze vollständig und wandle Dezimalzahlen einschließlich periodischer Dezimalzahlen in Brüche um.
- Prozentrechner
Berechne X % von Y, den Prozentanteil einer Zahl an einer anderen, prozentuale Zu- und Abnahmen, die prozentuale Differenz und den Grundwert vor einem prozentualen Aufschlag.
- Schriftliche Division mit Rest und Dezimalstellen
Long division calculator that shows every step: quotient and remainder, the decimal quotient with its repeating block marked, and the fraction.
- Rechner für Mittelwert, Median und Modalwert
Average calculator for a list of numbers: mean, median, mode, range, count and sum, with the sorted data and the middle values highlighted.
- Rechner für Verhältnisse und Proportionen
Simplify a ratio, solve a proportion a : b = c : x for the missing term, scale a ratio to a target, or split an amount in a given ratio, exactly.
- Umrechner für römische Zahlen
Convert numbers to Roman numerals and Roman numerals to numbers, from 1 to 3,999 (3,999,999 with overlines), with the standard form of any numeral.
- Rechner zum Runden und für signifikante Stellen
Runde auf Dezimalstellen, signifikante Stellen oder den nächsten Zehner oder Hunderter. Neun Regeln stehen zur Wahl, darunter Runden zur geraden Zahl sowie Abrunden und Aufrunden.
- Rechner für wissenschaftliche Schreibweise und Standardform
Scientific notation calculator: convert between decimal, scientific, E and engineering notation, and add, subtract, multiply or divide with sig-fig rules.
- Quadratwurzelrechner und Vereinfachung von Wurzeltermen
Square root calculator: the root to up to 1,000 decimal places, simplest radical form (√72 = 6√2), a perfect-square check and cube or nth roots.
- Rechner für den gewichteten Mittelwert
Weighted average calculator: enter values with weights, one pair per line, for the weighted mean, sum of weights and each value's contribution.
Algebra
- Löser für quadratische Gleichungen
Lösen Sie ax² + bx + c = 0 mit der quadratischen Lösungsformel: exakte Wurzelausdrücke oder komplexe Nullstellen, Diskriminante, Scheitelpunkt, Symmetrieachse und Graph.
- Rechner für komplexe Zahlen
Add, subtract, multiply and divide complex numbers, raise them to powers, find nth roots, and convert a + bi to polar form, with an Argand diagram.
- Potenz- und Wurzelrechner
Raise a number to any exponent, including fractional and negative ones, or take its square, cube or nth root, with exact simplified radicals such as 5√2.
- Logarithmusrechner
The logarithm of a number to any base, including ln and log₁₀, with change-of-base steps, or the exponent x that solves bˣ = y, exact when rational.
- Rechner für Polynomnullstellen
All real and complex roots of a polynomial up to degree 6, such as a cubic or quartic equation, with repeated roots found exactly and 30-digit accuracy.
Lineare Algebra
- Matrizenrechner
Determinante, Inverse, Rang und reduzierte Zeilenstufenform einer Matrix bis 6 × 6 mit allen Zeilenoperationen sowie Transponierte, Produkt und Summe in exakten Brüchen.
- Löser für lineare Gleichungssysteme
Solve 2 to 5 simultaneous linear equations exactly by Gauss–Jordan elimination, with every row operation shown, and detect no-solution or infinite cases.
- Vektorrechner
Dot and cross products of two vectors in 2D or 3D, their magnitudes, the angle between them and the projection of one onto the other, with a drawing.
Zahlentheorie
- Teilerrechner: alle Teiler einer Zahl
Factor calculator: every factor and factor pair of a whole number up to 10¹⁸, its prime factorization, divisor count and sum, and perfect or abundant.
- Rechner für ggT und kgV
Greatest common divisor (GCD, GCF or HCF) and least common multiple (LCM) of two or more whole numbers, with Euclid's algorithm step by step.
- Modulo-Rechner
Calculate a mod n under the floored, truncated and Euclidean conventions, modular powers a^b mod m of large numbers, and modular inverses, with steps.
- Rechner zur Primfaktorzerlegung
Prime factorization of any whole number up to 60 digits, with a factor tree, a prime or composite verdict, its divisors and the nearest primes.
Folgen
Analysis
- Rechner für bestimmte Integrale
The definite integral of any function f(x) between two limits, by adaptive Gauss–Kronrod quadrature to about 20 significant digits, with the area shaded.
- Rechner für numerische Ableitungen
The first or second derivative of any function f(x) at a point, to about 20 significant digits by Richardson extrapolation, with the tangent line drawn.
Logik und Mengen
- Rechner für Mengenoperationen
Union, intersection, differences and symmetric difference of two sets of numbers or words, with the Jaccard index and a Venn diagram.
- Wahrheitstabellen erstellen
Truth table of a Boolean expression in up to 6 variables, with the canonical sum of products, product of sums, minterms and maxterms.
Den passenden Rechner wählen: Mathematik
Start with the operation
Use the percentage calculator when the question asks for a share, an increase or a difference; these use different denominators. Choose fractions when the exact numerator and denominator matter, such as scaling a ratio. The scientific calculator is useful for a mixed expression, while equation solvers accept coefficients and show roots. Parentheses determine which operation happens first, so enter the written expression before interpreting its rounded display.
Check the domain and precision
A numerical answer and an exact symbolic answer are different outputs. Use a worked example to check whether a tool accepts negative inputs, complex values or only real numbers. Trigonometric functions need the correct degree or radian setting. Near a discontinuity, graph sampling can hide a feature; use the formula and interval as well as the picture. Keep extra precision through intermediate steps and round the final answer for the task.