The document summarizes key methods from the System.Math class in C# for working with mathematical operations: 1) Math.Pow raises a base to a power, taking a base and exponent as parameters. 2) Math.Sqrt finds the square root of a number by passing the number as a parameter. 3) Math.PI returns the value of pi, useful for circumference and other circle calculations. 4) Math.Round rounds a decimal number to a specified number of decimal places.

1. MATH CLASS (System.Math)
M3 COMPUTER SCIENCE CLASS – TERM 2
THE PRINCE ROYAL'S COLLEGE

2. MATH CLASS
Math.Pow – raises the value of a base to a power
Syntax: Math.Pow (double X, double Y)
where X is the base and Y is the exponent (XY)
Example:
Double a = 4;
Double b = 3;
C = Math.Pow (a , b);
This means C = ab therefore, C = 43 so, C = 64

3. MATH CLASS
Math.Sqrt – finds the square root of a number
Syntax: Math.Sqrt (double X)
finds the Square Root of X
Example:
Double a = 4;
C = Math.Sqrt(a);
This means C = 𝑎 therefore, C = 4 so, C = 2

4. MATH CLASS
Math.PI – gives out the value of  (pi)
Example:
// The circumference of the circle C = 2r
Double r = 1;
C = 2 * Math.PI * r;
This means C = 2  r ∗ therefore, C =2 so, C =
6.28318530718…

5. MATH CLASS
Math.Round – rounds off a number
Syntax: Math.Rounds (decimal X, int Y)
Rounds the decimal number X, to Y decimal places
Example:
// Rounding the value of  to two decimal places
Double pi;
pi = Math Round(Math.PI , 2)
This means pi = 3.14159265359… rounded off to two decimal places,
so pi=3.14

6. MATH METHODS
For more info on the Math Class go to:
https://msdn.microsoft.com/en-
us/library/System.Math%28v=vs.110%29.aspx

7. THE END