Taking Logarithms : Math « Development « Ruby






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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