Quadratic Equation Solver, Simultaneous Equation Solver, Meeting organizer

quad.rb

#Julius and Mercy Quadratic Equation Solver 

#Implementation of the formula x= (-b+- (b**2-4ac)**2)/2a
def quad_values(a,b,c)
  a = a.to_f
  b = b.to_f
  c = c.to_f
  d = (b**2) - (4*a*c)
  if d >= 0
    d = Math.sqrt(d)
    x1 = (-b + d)/(2*a)
    x2 = (-b - d)/(2*a)
    print(x1.to_s + ',' + x2.to_s)
  else
    print('the roots are not real numbers')
  end
end

quad_values(2,3,1)

simultaneous_equation.py

import numpy as np

def equation(eq,arr):
	if eq == 2:
		a,d = arr[0][0], arr[1][0]
		b,e = arr[0][1], arr[1][1]
		c,f = arr[0][2], arr[1][2]
		J = np.array([[a,b],[d,e]])
		
		b = np.array([c,f])
		n = np.linalg.solve(J,b)
		return n
	elif eq == 1:
		x = arr[0]
		y = arr[1]
		z = arr[2]
		A = (z-(y))/x
		return A
	else:
		print 'cant handle this'