Taking Logarithms : Math « Development « Ruby

1.	ActiveRecord
2.	Array
3.	CGI
4.	Class
5.	Collections
6.	Database
7.	Date
8.	Design Patterns
9.	Development
10.	File Directory
11.	GUI
12.	Hash
13.	Language Basics
14.	Method
15.	Network
16.	Number
17.	Rails
18.	Range
19.	Reflection
20.	Statement
21.	String
22.	Threads
23.	Time
24.	Tk
25.	Unit Test
26.	Windows Platform
27.	XML

Ruby » Development » Math

Taking Logarithms





puts Math.log(1)                                    # => 0.0

puts Math.log(Math::E)                              # => 1.0

puts Math.log(10)                                   # => 2.30258509299405

puts Math::E ** Math.log(25)                        # => 25.0



puts Math.log10(1)                                  # => 0.0

puts Math.log10(10)                                 # => 1.0

puts Math.log10(10.1)                               # => 1.00432137378264

puts Math.log10(1000)                               # => 3.0

puts 10 ** Math.log10(25)                           # => 25.0

Related examples in the same category

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.	Random number
7.	Random seeds
8.	Convert the Cartesian point (x,y) to polar (magnitude, angle) coordinates
9.	Convert polar coordinates to Cartesian coordinates

java2s.com | Contact Us | Privacy Policy

All other trademarks are property of their respective owners.