Quadratic Equation - Input An A,b And C Value And It Finds The Roots

Apr 13, 2008

Public Class form1
Inherits System.Windows.Forms.Form
Private Sub cmdCalc_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles


This is my code for solving the quadratic equation..you input an a,b and c value and it finds the roots but i dont know how to graph it.


Write A Program To Compute The Roots Of A Quadratic?

Nov 25, 2010

i cant seem to figure out where i am going wrong with this. im new to programming and havent really ran into many problems yet but this one has me baffled. i need to write a program to compute the roots of a quadratic i have my code and i am not getting any errors problem is i must check that the a value is nonzero so when i set my if block and use "if a = 0" and then display message it seems that it doesnt pass the values on to the else when a does not = 0.


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Also if I want a user to input equation such as A+B into the box, but then I need to use the equation user input to find answer for certain A and B value. Can this be done?

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Here my

Public Class Form1

Dim Number1 As Double
Dim Number2 As Double


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I am trying to develop a simple math calculator that will allow the user to input the right-hand-side (RHS) of an equation into a textbox on the application and have the application evaluate the expression for a given value of x, which is also input
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y = 3 + 4*x + 5*x^2

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answer = EquationTextBox.Text

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Nov 13, 2010

I am trying to make a program to calculate the roots of a polynomial equation using the bisection method. I have designed the program so the user input a range of x values (x1 and x2) to solve for the root. When I debug the program I keep getting zero for the root. I know there must be something wrong the way I have my loop setup that keeps giving me a zero root. Here is what I have so far

Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim x1 As Double
Dim x2 As Double


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I'm new to the server and I'm making a quadratic calculator with my friend. I have my calculator coded, but whenever i click the calculate button the answer comes up as "NaN". Here is the code.
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The Variables "IntVarA", IntVarB, and IntVarC are defined as public variables in a code module.

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When I run this code I can use any directory as the root directory except My Documents.When I use the directory path with My Documents, as well as finding all of the folders contained in My Documents, it finds three extra: My Music, My Pictures and My Videos. Those three folders do not exist at all in My Documents. I have checked hidden files and folder and they are definately not there yet the showDirectories() sub says that they are.The exact error is: Access to the path 'C:UsersMichaelDocumentsMy Music' is denied.It's dened because the folder doesn't exist. I have checked myself using Windows Explorer!Despite this, when I type 'file:///C:/Users/Michael/Documents/' in the address bar of Google Chrome, it shows all of the files and folders in My Documents and, guess what, it shows the folders My Music, My Pictures and My Videos. But Windows Explorer doesn't show these! The strange thing is, for each of the folders, the last Date Modified was 23/01/2011 13:42:49 exactly. Each of the folders was last modified at that exact second simultaneously!I have 3 "ghost" folders "haunting" my My Documents. Is there any programs out there that perform "exorcisms" cause I am seriously freaked out!Perhaps this is the wrong place to post this. When I started writing this thread, it was about Visual Basic but now I realise it has nothing to do with programming at all.

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Part SQL:
' (Houses4Sale.HousesAskingPrice <= ?)


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Here's the code:


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Program Description: Fortuitous Dice is a game that requires two dice be rolled, one at a time. If p and q are the numbers rolled on the first and second die, respectively the value of the roll in the game is determined as follows:

P Q Rule (value of the roll and condition)
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To simplify the part I am having problems with: rotationX = CurrentPositionX + ((InitialPositionX - MousePositonX) / SlowDownDivisor)

As an example, this occurs in both X and Y; If I click and drag in the X + Direction and release the mouse button it does exactly what I want, rotation in the positive direction. If I click and drag in the X + Direction and then drag in the X - direction, the rotation continues to be positive, it doesn't reverse. If I release the button and then click again and move in the X - direction the rotation is negative as it should, but it will continue to rotate in the negitive direction until the button is release.

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In our school theres a programming class and the teachers gone for the week and the sub is starting to get very frustrated, so I offered to help in any way i can. I have never programmed Visual Basic but I have programmed Ms-Dos, Javascript, HTML, *.vbs, *.ahk, *.gml, and a variety of other languages.

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I got the equation to answer it self and show in the text box but it won't show the equation?

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Alternatively I could try and manipulate lots of text boxes one on top of the other to try and explain what I'm doing

The third alternative I thought of was to write in equation editor export the graphic and then import a graphic.

I'm sure I must be trying to reinvent the wheel - which I believe is the one thing OE programming is supposed to avoid.

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