What is MathJS ?
Math.js is an extensive math library for JavaScript and NodeJS. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with different data types like numbers, big numbers, complex numbers, fractions, units, and matrices. Powerful and easy to use.
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Features
- Supports numbers, big numbers, complex numbers, fractions, units, strings, arrays, and matrices.
- Is compatible with JavaScript's built-in Math library.
- Contains a flexible expression parser.
- Does symbolic computation.
- Comes with a large set of built-in functions and constants.
- Can be used as a command line application as well.
- Runs on any JavaScript engine.
- Is easily extensible.
- Open source.
Usage
Math.js can be used in both node.js and in the browser.
Install math.js using npm:
npm install mathjsNote that when using mathjs in a TypeScript project, you will have to install type definition files too:
npm install @types/mathjsOr Math.js can be downloaded or linked from various content delivery networks:
| CDN | Url |
| unpkg | https://unpkg.com/mathjs@9.2.0/ |
| cdnjs | https://cdnjs.com/libraries/mathjs |
| jsDelivr | https://www.jsdelivr.com/package/npm/mathjs |
| PageCDN | https://pagecdn.com/lib/mathjs |
Math.js web service
Extensions
| Extension | Description |
| mathsteps | A step-by-step math solver library that is focused on pedagogy (how best to teach). The math problems it focuses on are pre-algebra and algebra problems involving simplifying expressions. |
| mathjs‑expression‑parser | This custom build of mathjs contains just the expression parser and basic arithmetic functions for numbers. About four times as small as the full mathjs library. |
| mathjs-simple-integral | Extends Math.js to be able to compute simple integrals. |
| math.diff.js | Symbolic differentiation plugin for Math.js |
| postcss-math | PostCSS plugin for making calculations with math.js |
Browser support
Mathjs can be used similar to JavaScript's built-in Math library.
Besides that, math.js can evaluate expressions and supports chained operations.
import {
atan2, chain, derivative, e, evaluate, log, pi, pow, round, sqrt
} from 'mathjs'
// functions and constants
round(e, 3) // 2.718
atan2(3, -3) / pi // 0.75
log(10000, 10) // 4
sqrt(-4) // 2i
pow([[-1, 2], [3, 1]], 2) // [[7, 0], [0, 7]]
derivative('x^2 + x', 'x') // 2 * x + 1
// expressions
evaluate('12 / (2.3 + 0.7)') // 4
evaluate('12.7 cm to inch') // 5 inch
evaluate('sin(45 deg) ^ 2') // 0.5
evaluate('9 / 3 + 2i') // 3 + 2i
evaluate('det([-1, 2; 3, 1])') // -7
// chaining
chain(3)
.add(4)
.multiply(2)
.done() // 14
Mathjs Examples
Learn how to use mathjs by viewing and forking example apps that make use of mathjs on CodeSandbox.
Source code
The source code of math.js is available on GitHub: https://github.com/josdejong/mathjs.
License
Math.js is open source and licensed under the Apache 2.0 License
Coding Math
See more Episodes of Coding Math https://www.youtube.com
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