Computer Science Canada

Remainder Theorem
Author:  randint [ Sat Oct 29, 2011 3:55 pm ]
Post subject:  Remainder Theorem
The remainder theorem, known as P(x)/d(x), where P(x) is any polynomial, d(x) is a linear. When you use the the root of d(x) and "plug" it into P(x), you get the remainder of the function.
Author:  Zren [ Sat Oct 29, 2011 6:28 pm ]
Post subject:  RE:Remainder Theorem
You might want to consider showing which coefficient your input is for.

Eg: 'Enter coefficient n (nx^3): '

~

Also, when a user's input is incorrect, you should not be continuing.

Java:

        try
        {
            degree = Integer.parseInt (br.readLine()) + 1;
        }
        catch (NumberFormatException n)
        {
            System.out.println ("You have not entered a valid integer!");
        }


You should either loop input until a valid input has been given, or you should be exiting your logic process when it happens.

code:

C:\Users\Admin\Desktop>java Remainder_Theorem
Enter the highest degree term: 0
Enter coefficient: a
You have not entered a valid number!
Enter the slope: a
You have not entered a valid number!
0.0x is a factor of this polynomial.


I'll also hint that since you're getting a double as input more than once, that you should consider writing a function to getInputDouble() that'll do the looping/error catching inside of that, and would return a valid number.
Author:  randint [ Sun Oct 30, 2011 1:00 pm ]
Post subject:  RE:Remainder Theorem
Yes, this is correct, in the newer version, I will add System.exit (0); in the catch blocks.

:


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