Demonstrandum · July 7, 2019 17:48 · Demonstrandum · Jul 7, 2019 · Shiimoe · Jul 7, 2019
diff --git a/basic_ruby.rb b/basic_ruby.rb

 def f x; x**2 + 2*x + 1; end

 def integrate sym, a, b
  dx = 0.001
  fn = method sym
  dx * (a..b - dx).step(dx).map(&fn).sum
 end

 puts integrate :f, 2, 4

 def differentiate sym, x
  h = 0.001
  fn = method sym
  (fn.call(x + h) - fn.call(x)) / h
 end

 puts differentiate :f, 7

	def f x; x*2 + 2x + 1; end

	def integrate sym, a, b
	dx = 0.001
	fn = method sym
	dx * (a..b - dx).step(dx).map(&fn).sum
	end

	puts integrate :f, 2, 4

	def differentiate sym, x
	h = 0.001
	fn = method sym
	(fn.call(x + h) - fn.call(x)) / h
	end

	puts differentiate :f, 7
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