Math Expression¶

Load libs

In [1]:
#r "./dotnet-libs/Nequeo.Math.dll"
using Nequeo.Math;

using System;
using System.IO;
The below script needs to be able to find the current output cell; this is an easy method to get it.

Create instance

Run expression

In [2]:
Nequeo.Math.MathGenerics<string> exp = new Nequeo.Math.MathGenerics<string>();
double result = exp.Expression<Double>("cos(x) * sin(x) * sqrt(x) * pi", 3.0, "x");
double result1 = exp.Expression<Double>("((34.8 * 23) * sqrt(9.0)) + pi");

Compute result

In [3]:
Console.WriteLine(result);
Console.WriteLine(result1);

-0.7602054794855984
2404.3415926535895

Run expression with variables

In [4]:
System.Collections.Generic.Dictionary<string, double> vars = new System.Collections.Generic.Dictionary<string, double>();
vars.Add("x", 2.7);
vars.Add("y", 5.7);
vars.Add("z", 5.7);
double result2 = exp.ExpressionMulti<Double>("2y^5 * 6x^2 * z * pi", vars);

Compute result

In [5]:
Console.WriteLine(result2);

9425573.428813294

Run expression with multi line, compute mean

In [6]:
double mean = exp.Expression<Double>(
    " var x[25] := {                     " +
    "                 1,  2,  3,  4,  5, " +
    "                 6,  7,  8,  9, 10, " +
    "                11, 12, 13, 14, 15, " +
    "                16, 17, 18, 19, 20, " +
    "                21, 22, 23, 24, 25  " +
    "              };                    " +
    "                                    " +
    " avg(x)");

Compute result

In [7]:
Console.WriteLine(mean);

13

Run expression with multi line, compute standard deviation

In [8]:
double standardDeviation = exp.Expression<Double>(
    " var x[25] := {                     " +
    "                 1,  2,  3,  4,  5, " +
    "                 6,  7,  8,  9, 10, " +
    "                11, 12, 13, 14, 15, " +
    "                16, 17, 18, 19, 20, " +
    "                21, 22, 23, 24, 25  " +
    "              };                    " +
    "                                    " +
    " sqrt(sum([x - avg(x)]^2) / x[])    ");

Compute result

In [9]:
Console.WriteLine(standardDeviation);

7.211102550927978
In [ ]: