File: include_1.rb

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# In this file, there are some examples of how we can define
# mathematical functions and use them. See the README file for
# more details. You don't need to include Math as it will be done
# automatically by backends.


# We define a simple polynom
def pol(x)
  (1.0 - x) * (1.0 + x)
end

# here, we redefine sin(x)
def sin(x)
  cos(x)
end