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    Math.js is an extensive math library for JavaScript and Node.js. 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.


    • 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.
    • Has no dependencies. Runs on any JavaScript engine.
    • Can be used as a command line application as well.
    • Is easily extensible.
    • Open source.


    Math.js can be installed using npm or bower, or by downloading the library. The library can be used in both node.js and in the browser. See the Getting Started for a more detailed tutorial. To install math.js using npm:

    npm install mathjs

    Math.js can be used similar to JavaScript's built-in Math library. Besides that, math.js can evaluate expressions and supports chained operations.

    // load math.js
    var math = require('mathjs');
    // functions and constants
    math.round(math.e, 3);            // 2.718
    math.atan2(3, -3) / math.pi;      // 0.75
    math.log(1000, 10);               // 3
    math.sqrt(-4);                    // 2i
    math.pow([[-1, 2], [3, 1]], 2);   // [[7, 0], [0, 7]]
    math.derivative('x^2 + x', 'x');  // 2 * x + 1
    // expressions
    math.eval('12 / (2.3 + 0.7)');    // 4
    math.eval('5.08 cm to inch');     // 2 inch
    math.eval('sin(45 deg) ^ 2');     // 0.5
    math.eval('9 / 3 + 2i');          // 3 + 2i
    math.eval('det([-1, 2; 3, 1])');  // -7
    // chaining
        .done(); // 14



    First clone the project from github:

    git clone git://
    cd mathjs

    Install the project dependencies:

    npm install

    Then, the project can be build by executing the build script via npm:

    npm run build

    This will build the library math.js and math.min.js from the source files and put them in the folder dist.


    To execute tests for the library, install the project dependencies once:

    npm install

    Then, the tests can be executed:

    npm test

    To test code coverage of the tests:

    npm run coverage

    To see the coverage results, open the generated report in your browser:



    Copyright (C) 2013-2017 Jos de Jong

    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

    Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.


    npm i experiment-mathjs


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