Ruby

fibonacci

def fibonaci(num)
	$i  = 0
	$s1 = 0
	$s2 = 0
	$s3 = 0

	while $i < $num.to_i do
		if ($i <= 1)
			$s1 = 1
			$s2 = 1
			puts 1
		else
		
			$s3 = $s2 + $s1
			$s1 = $s2
			$s2 = $s3

			puts $s3;
		end
		$i += 1
	end
end

Quadratic Equation 2

def quadraticEquation2(a, b, c)

	a = a.to_f
	b = b.to_f
	c = c.to_f

  	if a == 0
  		x = b / c
  		return x
  	end
  	
  	x1 = (-b - Math.sqrt(b**2-4*a*c)) / (2*a)
  	x2 = (-b + Math.sqrt(b**2-4*a*c)) / (2*a)

  	rs = ['x1' => x1, 'x2' => x2]

end