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C# / .NET - Math.E property example
0 points
The Math.E property returns e mathematical constant (2.718281828459045...).
e is called Euler's number or Napier's constant. However, it was discovered by Jacob Bernoulli. It is a mathematical constant used as the base of the natural logarithm.
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using System;2
3
public class Program4
{5
public static void Main(string[] args) 6
{7
Console.WriteLine( Math.E ); // 2.7182818284590458
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Console.WriteLine( Math.Exp(1) ); // 2.71828182845904510
Console.WriteLine( Math.Exp(2) ); // 7.3890560989306511
Console.WriteLine( Math.Exp(3) ); // 20.08553692318766812
}13
}| Syntax |
xxxxxxxxxx1 namespace System2 {3 public static class Math4 {5 // ...6 public static const double E = 2.7182818284590451;7 // ...8 }9 } |
| Result | e number (2.718281828459045...). |
| Description |
|
To calculate e The following function with infinity series can be used to get a better precision infinite number of iterations with big precision numbers.
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using System;2
3
public class Program4
{5
static double ComputeE(int iterations)6
{7
double e = 0;8
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for (int i = 0; i < iterations; i++)10
{11
double divider = 1;12
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for (int j = 0; j < i; j++)14
divider *= (j + 1);15
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e += (1.0 / divider);17
}18
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return e;20
}21
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public static void Main(string[] args)23
{24
Console.WriteLine( ComputeE(1) ); // 125
Console.WriteLine( ComputeE(2) ); // 226
Console.WriteLine( ComputeE(5) ); // 2.70833333333333327
Console.WriteLine( ComputeE(10) ); // 2.718281525573192228
Console.WriteLine( ComputeE(20) ); // 2.718281828459045529
Console.WriteLine( ComputeE(50) ); // 2.718281828459045530
}31
}