My First Productive Application; a Quadratic Equation Solving Application. i designed every Algorithm myself. i programmed it with Python and programmed the GUI in Kivy Framework for innovative cross platform app development.

I am a self taught programmer.
I need People to work with and program something better; thereby improving our skills as people around me have little or no interest or passion for computer programming..

i will upload a screenshot of my App so you can see how it looks and give me feedback for i am planning on releasing it to the public via Play Store.

i will download it and test it!

Does it solve quadratic equations whose answers are COMPLEX?
By the way, well done.

nice one bro, keep on the good work. I hope to develop my first program soon using Ruby.

khaynoni:
Does it solve quadratic equations whose answers are COMPLEX?
By the way, well done.

give me some of the Complex ones u know and i will test it to see if my App can solve but if it can't, i will start working on a function for those complex equations.. thanks!

Austinoski:



give me some of the Complex ones u know and i will test it to see if my App can solve but if it can't, i will start working on a function for those complex equations.. thanks!

Try this
2X²-2X+3=0

This is kivy python....you could have resized your textbox, although I know its a pain in the ass using kivy for andriod development.

Following. Keep up d good work bro.
M also self learning python but i got lost nd decided to take a break

Nice one bro...teach us how you made it on macaranta.com

sleepingdemon:
This is kivy python....you could have resized your textbox, although I know its a pain in the ass using kivy for andriod development.

Honestly! it is not easy at all...

Austinoski:



Honestly! it is not easy at all...

The lord is your strength

...

X1 = (-b+√b²-4ac)/2a
X2 = (-b-√b²-4ac)/2a

As easy as this, using the quadratic/almighty formula

Try building a simaltaneous equation solver, that should be more challenging.

Austinoski:



Honestly! it is not easy at all...

Still waiting for your response.

Wow,awesome app bro nice work

It's nice hommie. But you've got to see my own work. Its mind blowing and it handles complex alright.
The web address - http://www.nickzom.com

It is in the mathematics section.

Kodejuice:
Try building a simaltaneous equation solver, that should be more challenging.

determinants . . .

your quadratic equation answer is wrong, check your code again and correct the bug

Teempakguy:
determinants . . .

Yeah, Matrices

Kodejuice:

Yeah, Matrices

hmmn, in that case, i don't think it's that hard. here's one i wrote. one small one. it can only calculate for two simultaneous equations. though. but extending it to three or more shouldn't be much of a pain.
Op, it goes like this.

/**
 * 
 */

/**
 * @author teempakguy
 *
 */
import java.util.Scanner ;
import java.text.DecimalFormat;
public class equation {

	private static Scanner in;

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		DecimalFormat f = new DecimalFormat("##.00" ) ;
 double a1 ;
 double a2 ;
 double b1 ;
 double b2 ;
 double d1 ;
 double d2 ;
 double xv ;
 // xv means the value of x.
 double yv ;
 // yv means the value of y
 double m1 ;
 // m1 means the slope of the first equation.
 double m2 ;
 // m2 means the slope of the second equation.
 
 Scanner in = new Scanner(System.in) ;
 
 System.out.println("Hello, World. I'm here to calculate simultaneous equations." ) ;
 System.out.println("before you start, make sure your equations are in the form ax + bx + d " ) ;
 
 System.out.println("Now, what is the first x coefficient?" ) ;
 a1 = in.nextDouble() ;
 
 System.out.println("And the first y coefficient?" ) ;
 b1 = in.nextDouble() ;
 
 System.out.println("and the constant term?" ) ;
 d1 = in.nextDouble() ;
 
 System.out.println("now, I need the values for the second equation." ) ;
 
 System.out.println("What is the second x coefficient? " ) ;
 a2 = in.nextDouble() ;
 
 System.out.println("and the second y coefficent? " ) ;
 b2 = in.nextDouble() ;
 
 System.out.println("And the constant term for that?" ) ;
 d2 = in.nextDouble() ;
 
 double detzero ;
 double detone ;
 double dettwo ;
 // det stands for determinant.
 
 detzero = ((a1*b2) - (a2*b1)) ;
 detone = ((b1*d2) - (b2*d1)) ;
 dettwo = ((a1*d2) - (a2*d1)) ;
 
 if (detzero == 0)
 {
	 System.out.println("you've Got to be kidding me. this is an invalid equation. :-/ " ) ;
 }
 
 xv = (detone / detzero) ;
 yv = ((-1) * (dettwo / detzero)) ;
 m1 = (-1  * (a1/b1)) ;
 m2 = (-1 * (a2/b2)) ;
 

System.out.println("The value of x is " + f.format(xv)) ;
System.out.println("The value of y is " + f.format(yv)) ;
System.out.println("The slope of the first equation is " + f.format(m1)) ;
System.out.println("The slope of the second equation is " + f.format(m2)) ; 
 
 
	
}
}

Austinoski:
My First Productive Application; a Quadratic Equation Solving Application. i designed every Algorithm myself. i programmed it with Python and programmed the GUI in Kivy Framework for innovative cross platform app development.

I am a self taught programmer.
I need People to work with and program something better; thereby improving our skills as people around me have little or no interest or passion for computer programming..

i will upload a screenshot of my App so you can see how it looks and give me feedback for i am planning on releasing it to the public via Play Store.

Hello, you did well owing to the fact that you are a self taught programmer good one, buh u need to work on your design because design is everything. Take care of your details... UI and UX
if you are in Enugu lets meet up, reply me..... I like serious minded guys