calcufly-math

Math and statistics calculator functions for Node.js. Percentages, fractions, geometry, algebra, statistics, trigonometry and more.

Part of the CalcuFly calculator suite — 600+ free online calculators.

Installation

npm install calcufly-math

Quick Start

const math = require('calcufly-math');

// Quadratic equation
const roots = math.quadratic(1, -5, 6);
console.log(roots); // { x1: 3, x2: 2 }

// Statistics
const data = [4, 8, 15, 16, 23, 42];
console.log(math.mean(data));   // 18
console.log(math.median(data)); // 15.5
console.log(math.standardDeviation(data));

// Geometry
console.log(math.circleArea(5));      // 78.54
console.log(math.sphereVolume(3));    // 113.10
console.log(math.pythagorean(3, 4));  // 5

API Reference

| Function | Description | |----------|-------------| | percentage(value, percent) | Percentage of a value | | percentageChange(old, new) | Percentage change | | gcd(a, b) | Greatest common divisor | | lcm(a, b) | Least common multiple | | quadratic(a, b, c) | Solve quadratic equation | | mean(numbers) | Average | | median(numbers) | Median value | | mode(numbers) | Most frequent values | | standardDeviation(numbers) | Std deviation | | correlation(x, y) | Pearson correlation | | factorial(n) | Factorial | | permutations(n, r) | Permutations | | combinations(n, r) | Combinations | | circleArea(r) | Circle area | | triangleAreaHeron(a, b, c) | Triangle area (Heron) | | sphereVolume(r) | Sphere volume | | pythagorean(a, b) | Hypotenuse | | isPrime(n) | Prime check | | primeFactors(n) | Prime factorization | | fibonacci(n) | Fibonacci sequence |

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License

MIT — CalcuFly