The Math class

Math class: contains methods like sqrt and pow
To compute xn, you write Math.pow(x, n)
static double pow(double a, double b)
Returns the value of the first argument raised to the power of the second argument.
However, to compute x2 it is significantly more efficient simply
to compute x * x
To take the square root of a number, use the Math.sqrt; for
example, Math.sqrt(x)
static double sqrt(double a)
Returns the correctly rounded positive square root of a double value.

In Java, can be represented as (click here)
(-b + Math.sqrt(b * b - 4 * a * c)) / (2 * a)

static double


    
    exp(double a)

Returns Euler's number e raised to the power of a


    double

value.

static double log(double a)
Returns the natural logarithm (base e) of a double value.

static double sin(double a)
Returns the trigonometric sine of an angle.

static double cos(double a)
Returns the trigonometric cosine of an angle.

static double tan(double a)
Returns the trigonometric tangent of an angle.

static long round(double a)
Returns the closest long to the argument.

static double min(double a, double b)
          Returns the smaller of two double values.
static float min(float a, float b)
          Returns the smaller of two float values.
static int min(int a, int b)
          Returns the smaller of two int values.
static long min(long a, long b)
          Returns the smaller of two long values.

static double max(double a, double b)
          Returns the greater of two double values. static float max(float a, float b)
          Returns the greater of two float values. static int max(int a, int b)
          Returns the greater of two int values. static long max(long a, long b)
          Returns the greater of two long values.

Calling Static Methods

A static method does not operate on an object double x = 4;
double root = x.sqrt(); // Error
Static methods are defined inside classes
Naming convention: Classes start with an uppercase letter; objects start with a lowercase letter

Math
System.out