DSL for symbolic integration of polynomials

poly.rb

def polynomial(&block)
  varX = Variable::Local.new('x')
  x = Polynomial.valueOf(Real::ONE,varX)
  yield x 
end

# Creating a polynomial fx = 1(x^5) + 6(x^2).
fx = polynomial do |x|
  x.pow(5).plus(x.pow(2).times(Real.valueOf(6)))
end

# Integrating with respect to variable 'x'.
puts fx.integrate(varX)