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Update Quadratic.swift #34

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48 changes: 34 additions & 14 deletions 2-variables/quadratic-formula/Quadratic.swift
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Original file line number Diff line number Diff line change
@@ -1,19 +1,39 @@
// Quadratic Formula 📈
// Sonny Li
/*
Date: June 21, 2023

var a: Double = 6
var b: Double = -7
var c: Double = -3
This is to calculate quadratic formula.

var root1: Double
var root2: Double
The equation is:

// The positive root
root1 = (-b + (b*b - 4*a*c).squareRoot()) / (2*a)
x = (-b +or- sqrt(b^2 - 4ac) )/(2a)

First step let us defind b, a, c
*/

import Foundation //Math framwork

//Identify a, b, c
var a : Double = 2

var b : Double = 5

var c : Double = 3


//b^2
var bSquared = pow(b, 2)


// square root
var discriminant : Double = sqrt(bSquared - (4 * a * c))


//The formula
var xPositive : Double = ((-b + discriminant) / (2 * a))
var xNegitive : Double = ((-b - discriminant) / (2 * a))

//Print Result
print("The quadratic formula result for X if a = \(a) b = \(b) and c = \(c) is:")
print(" X = \(xPositive), or X = \(xNegitive)")

// The negative root
root2 = (-b - (b*b - 4*a*c).squareRoot()) / (2*a)

// Outputting the roots
print("Root 1 is \(root1)")
print("Root 2 is \(root2)")