Class: Discriminant

Inherits:
Object
  • Object
show all
Defined in:
lib/oops_can.rb

Class Method Summary collapse

Class Method Details

.ask ⇒ Object 



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# File 'lib/oops_can.rb', line 5

def self.ask
	puts "For Learn More About Discriminant Follow ENG http://en.wikipedia.org/wiki/Discriminant"
end

.make ⇒ Object 



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# File 'lib/oops_can.rb', line 9

def self.make

puts "Please input the A: "
a = gets.to_i

puts "Please input the B: "
b = gets.to_i

puts "Please input the C: "
c = gets.to_i

	
	d = (b**2) - (4 * a * c )
	puts "Discriminant: #{d}"
	if  d > 0 	 		
		x1 = (b - (d ** 0.5))/(2 * a)
		x2 = (b + (d ** 0.5))/(2 * a)
		puts "x1: #{x1}"
		puts "x2: #{x2}"

		# create graph
		g = Gruff::Dot.new
       g.title = 'Discriminant have 2 dots'
       g.labels = {
         0 => 'x1',
         1 => 'x2',
       }
       g.data(:x1, [x1], '#990000')
       g.data(:x2, [x2], '#990099')
       g.write('Discriminant.png')
	
	elsif d == 0 
		x = (-b )/(2 * a)
		puts "x: #{x}"
		#creating graph
		g= Gruff::Line.new
		g.title = 'Discriminant have 1 dot'
	g.labels = { 0 => 'x' }
	g.data(:x, [x])
	g.write
	
	else

	puts "Not Found X's"
	end
end