Home
Ruby
ActiveRecord
Array
CGI
Class
Collections
Database
Date
Design Patterns
Development
File Directory
GUI
Hash
Language Basics
Method
Network
Number
Rails
Range
Reflection
Statement
String
Threads
Time
Tk
Unit Test
Windows Platform
XML
Math « Development « Ruby
Ruby
Development
Math
1.
Math functions from the Math module
2.
The Math Object
3.
The Math.exp function returns Euler to the power of x.
4.
Call to the class method sqrt from the Math module
5.
do natural logarithms (base E or Euler) and base-10 logarithms.
6.
Taking Logarithms
7.
Random number
8.
Random seeds
9.
Convert the Cartesian point (x,y) to polar (magnitude, angle) coordinates
10.
Convert polar coordinates to Cartesian coordinates