Module: Mathpack::Equation

Defined in:
lib/mathpack/equation.rb

Class Method Summary collapse

Class Method Details

.derivative(xk, &function) ⇒ Object 



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# File 'lib/mathpack/equation.rb', line 13

def self.derivative(xk, &function)
  eps = 1e-5
  (function.call(xk + eps) - function.call(xk - eps)) / (2 * eps)
end

.solve(params = {}, &function) ⇒ Object 



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# File 'lib/mathpack/equation.rb', line 3

def self.solve(params = {}, &function)
  xk1 = params[:start]
  loop do
    xk = xk1
    xk1 = xk - function.call(xk) / derivative(xk, &function)
    break if (xk1 - xk).abs < params[:eps]
  end
  xk1
end