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Java Math

Math class in Java

Math class

The operators in Java

Java operators +, -, *, /, is as same as JavaScript
  • Summary of Operators in Java

    Math Object Properties (Math.Constants)

    Constants in Java Math class should used as Math.constant
    Property Description
    Math.E Returns Euler's number (approx. 2.718)
    Math.PI Returns PI (approx. 3.14)

    Math Object Methods (Math.Functions)

    Function in Java Math class should used as Math.function

    Method Description
    abs(x) Returns the absolute value of x
    acos(x) Returns the arccosine of x, in radians
    acosh(x) Returns the hyperbolic arccosine of x
    asin(x) Returns the arcsine of x, in radians
    asinh(x) Returns the hyperbolic arcsine of x
    atan(x) Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians
    atan2(y, x) Returns the arctangent of the quotient of its arguments
    atanh(x) Returns the hyperbolic arctangent of x
    cbrt(x) Returns the cubic root of x
    ceil(x) Returns x, rounded upwards to the nearest integer
    cos(x) Returns the cosine of x (x is in radians)
    cosh(x) Returns the hyperbolic cosine of x
    exp(x) Returns the value of Ex
    Math.expm1(x) Returns the value of Ex minus 1
    floor(x) Returns x, rounded downwards to the nearest integer
    log(x) Returns the natural logarithmof x
    log10(x) Returns the base-10 logarithm of x
    Math.log1p(x) Returns the natural logarithm of 1 + x
    max(x, y, z, ..., n) Returns the number with the highest value
    min(x, y, z, ..., n) Returns the number with the lowest value
    pow(x, y) Returns the value of x to the power of y
    random() Returns a random number between 0 and 1
    round(x) Rounds x to the nearest integer
    sign(x) Returns the sign of a number (checks whether it is positive, negative or zero)
    sin(x) Returns the sine of x (x is in radians)
    sinh(x) Returns the hyperbolic sine of x
    sqrt(x) Returns the square root of x
    tan(x) Returns the tangent of an angle
    tanh(x) Returns the hyperbolic tangent of a number
    trunc(x) Returns the integer part of a number (x)

    Math class in mathHand

    API

  • Java API
  • Internal Function 内部函数

    operator in mathHand

  • = is equation sign
  • ! is factorial, e.g. 2! is factorial(2)
  • assignment operator is :=
  • Power operators are ^ and **
  • operators +, -, *, /, ^, ** also are complex operators.

    Math Constants

    Property Description
    e Returns Euler's number (approx. 2.718)
    pi Returns PI (approx. 3.14)
    degree Returns PI/180 (approx. 0.017453292519943295)
    eulerGamma Returns euler Gamma (approx. 0.5772156649015329)

    Real math

    Java Math class is real math. Math in mathHand included Java Math class, and complex math as following. More is in help.

    Complex math

    complex math also work in real domain.

    Complex numbers are represented by a dictionary of real and imaginary attributes:

    complex( x, y ) — returns a complex number as { re: x, im: y }

    complex( x ) — returns a complex number as { re: x, im: 0 }

    Real and imaginary part

    The separate attributes can be accessed through their respective names,

    or with convenience functions:

    re( x ) — real part of a real or complex number

    real( x ) — real part of a real or complex number

    im( x ) — imaginary part of a real or complex number

    imag( x ) — imaginary part of a real or complex number

  • complex operators in mathHand are +, -, *, /, ^, **

    example

    e.g. 1+2i is complex(1,2)
    more is in example

    calculator

    math calculator calculate and plot functions.

    Coding

  • Front-end webpage is coding with HTML + JavaScript.
  • Back-end server is coded with Java.

    See Also

  • JavaScript Math. 
    See Also
    
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