Simple expressions

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The tutorial consists of more than 200 live examples from 50 sections. Each of the examples can be copied and run on your own environment. In addition, mXparser provides an extensive collection of over 500 built-in math functions, expressions and symbols. Familiarize yourself with the scope and the syntax. Live testing is the best way to learn. Good luck! 🙂

Tutorial Math Collection API spec Download

Below is the code for JAVA, the code for C# is almost identical.

Case 1: Simple calculation

$$2+1$$

import org.mariuszgromada.math.mxparser.*;
...
Expression e = new Expression("2+1");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.0.0] Res: 2+1 = 3.0

Case 2: Changing expression string

$$2-1$$

import org.mariuszgromada.math.mxparser.*;
...
Expression e = new Expression("2+1");
e.setExpressionString("2-1");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.0.0] Res: 2-1 = 1.0

Case 3: Using operators

$$2-\frac{32-4}{23+\frac{4}{5}}-(2-4)(4+6-98.2)+4$$

import org.mariuszgromada.math.mxparser.*;
...
Expression e = new Expression("2-(32-4)/(23+4/5)-(2-4)*(4+6-98.2)+4");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.0.0] Res: 2-(32-4)/(23+4/5)-(2-4)*(4+6-98.2)+4 = -171.57647058823528

Case 4: Power function

$$2^3+2^{3}+2^{3^{-4}}$$

import org.mariuszgromada.math.mxparser.*;
...
Expression e = new Expression("2^3+2^(-3)+2^3^(-4)");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.0.0] Res: 2^3+2^(-3)+2^3^(-4) = 9.133594091576999

Case 5: Using numbers in scientific notation

import org.mariuszgromada.math.mxparser.*;
...
Expression e1 = new Expression("1.2e2 + 1.2e+2 + 1.2e-2");
mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate() );
Expression e2 = new Expression("1.2E2 + 1.2E+2 + 1.2E-2");
mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate() );
[mXparser-v.5.0.0] Res 1: 1.2e2 + 1.2e+2 + 1.2e-2 = 240.012
[mXparser-v.5.0.0] Res 2: 1.2E2 + 1.2E+2 + 1.2E-2 = 240.012

Case 6: Percent sign support

import org.mariuszgromada.math.mxparser.*;
...
Expression e1 = new Expression("2%");
Expression e2 = new Expression("2% * 100");
Expression e3 = new Expression("pi% * 100");
mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate());
mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate());
mXparser.consolePrintln("Res 3: " + e3.getExpressionString() + " = " + e3.calculate());
[mXparser-v.5.0.0] Res 1: 2% = 0.02
[mXparser-v.5.0.0] Res 2: 2% * 100 = 2.0
[mXparser-v.5.0.0] Res 3: pi% * 100 = 3.1415926535897936

Case 7: Leading zeros support

import org.mariuszgromada.math.mxparser.*;
...
Expression e1 = new Expression("00123");
Expression e2 = new Expression("-00123");
Expression e3 = new Expression("-00000123.123e-10");
mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate());
mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate());
mXparser.consolePrintln("Res 3: " + e3.getExpressionString() + " = " + e3.calculate());
[mXparser-v.5.0.0] Res 1: 00123 = 123.0
[mXparser-v.5.0.0] Res 2: -00123 = -123.0
[mXparser-v.5.0.0] Res 3: -00000123.123e-10 = -1.23123E-8

Case 8: Fractions support

import org.mariuszgromada.math.mxparser.*;
...
Expression e = new Expression("1_2 + 2_1_2");
mXparser.consolePrintln("Res: " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.1.0] Res: 1_2 + 2_1_2 = 3.0
Nuget – Package Manager

Install-Package MathParser.org-mXparser -Version 5.2.0

Nuget – .NET CLI

dotnet add package MathParser.org-mXparser --version 5.2.0

Nuget – Package Reference

<PackageReference Include="MathParser.org-mXparser" Version="5.2.0"/>

Maven – Dependency

<dependency>
<groupid>
org.mariuszgromada.math</groupid>
<artifactid>
MathParser.org-mXparser</artifactid>
<version>
5.2.0</version>
</dependency>

Maven – Gradle

implementation 'org.mariuszgromada.math:MathParser.org-mXparser:5.2.0'

Maven – Gradle (Kotlin)

implementation("org.mariuszgromada.math:MathParser.org-mXparser:5.2.0")

GitHub

git clone https://github.com/mariuszgromada/MathParser.org-mXparser

OTHER DOWNLOAD OPTIONS

Download latest release – v.5.2.0 Orion: .NET bin onlyDownload latest release – v.5.2.0 Orion: JAVA bin onlyDownload latest release – v.5.2.0 Orion: bin + doc

NEWS FROM MATHPARSER.ORG
SOURCE CODE

Source code .zipSource code .tar.gz
View on GitHubMathSpace.pl

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