How to use the parser function from mathjs
Find comprehensive JavaScript mathjs.parser code examples handpicked from public code repositorys.
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// $ npm install mathjs // var mathjs = require('mathjs'); var integrate = require('../'); var parser = mathjs.parser(); parser.eval('f(x) = cos(1/x)/x'); var value = integrate(parser.get('f'), 0.01, 1, 0.001);
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GitHub: jly36963/notes
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const node = math.parse('sqrt(x/x+1)') node.toString() // returns 'sqrt((x / x) + 1)' node.toTex() // returns '\sqrt{ {\frac{x}{x} }+{1} }' // parser const parser = math.parser() // evaluate parser.evaluate('sqrt(3^2 + 4^2)') // 5 // evaluate function parser.evaluate('f(x, y) = x^y') // f(x, y)
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GitHub: niyonx/eternity
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// `include the math.js library const math = require('mathjs') class MathTool { constructor () { this.parser = math.parser() this.angleMode = 'deg' this.precision = 10 this._initCustomFunction() }
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// remove backslash with whitespace tmpData = tmpData.replace(/\\ /g, ' ') tmpData = tmpData.replace(/\\frac{(\S+)}{(\S+)}/, '$1/$2') // convert scientific notation tmpData = tmpData.replace(/\\cdot/g, '*') tmpData = tmpData.replace(/\^{\s*(\S+)\s*}/, '^($1)') // fix for math.parser() var parsedToValUnit = this.constructor.parseToValueUnit(tmpData) if (parsedToValUnit && parsedToValUnit[0]) {
+ 91 other calls in file
GitHub: kukawski/mathjs
![kukawski profile picture](/kukawski.png?size=40)
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```js // load math.js var math = require('mathjs'); // create a parser var parser = math.parser(); // evaluate expressions var a = parser.eval('sqrt(3^2 + 4^2)'); // a = 5 var b = parser.eval('sqrt(-4)'); // b = 2i
+ 47 other calls in file
mathjs.evaluate is the most popular function in mathjs (87200 examples)