using System;

Example :


using System;



double x = Math.Cos(Math.PI);

Console.WriteLine(x);


This succession of instructions returns the value of \(cos(\pi)\), namely -1.

• To calculate the logarithm of a number (natural logarithm to base \(e\)): \(\ln(x)\)

Math.Log(x)



• To calculate the exponential of a number: \(e^x\) (ou \(\exp(x)\))

Math.Exp(x)



• To calculate the square root of a number: \(\sqrt{x}\)

Math.Sqrt(x)



• To calculate the cosine of a number: \(\cos(x)\)

Math.Cos(x)



• To calculate the sine of a number: \(\sin(x)\)

Math.Sin(x)



• To calculate the tangent of a number: \(tan(x)\)

Math.Tan(x)



• To use the number pi: \(\pi\)

Math.PI



• To calculate the power of a number: \(x^y\)

Math.Pow(x,y)



• To get the closest integer smaller than a number (the integral part): the greatest integer less than or equal to x

Math.Floor(x)



• To get the closest integer greater than a number: the smallest integer greater than or equal to x

Math.Ceiling(x)



• To calculate the absolute value of a number: \(\lvert x \rvert\)

Math.Abs(x)