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.

[Code]...

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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

[CODE]..........

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.

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Quadratic Formula Program: "NaN" As Result When Answer(s) Are Negative

Dec 13, 2010

I'm working on a quadratic formula program and when I enter 1 as A, 2 as B, and 1 as A (X should end up being -1), it returns "NaN" in both text boxes.

Here's the code:

CODE:

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Cannot Compute Total Value Of A Row In Program

Jul 6, 2009

How can I get the total value of a row(qty) in datagridview in visual basic 2008?

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Compute Total Value Of A Row In Datagridview In Program 2008?

Jul 4, 2009

How can i compute the total value of a row in datagridview in vb 2008[code]...

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Finding The Roots Of Equations?

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

[code]....

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VS 2010 - Remove All Children But Keep Roots

Feb 11, 2011

I know you can run

treeview1.Nodes.clear()

and that removes everything, but how, or it is even possible, to just remove children and keep the parents. I added the root nodes in the properties window and built my code around those, but clearing also removes them. Then of course that makes the code error as it can't find the code when I re populate the treeview.

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Quadratic Calculator - Answer Comes Up As NaN

May 29, 2010

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.
TextBox4.Text = (intVarB * (-1)) + (((intVarB ^ 2 - (4 * (intVarA * intVarC))) ^ 0.5) / (2 * intVarA))
The Variables "IntVarA", IntVarB, and IntVarC are defined as public variables in a code module.

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Publishing In Visual Studio 2008 Or 2010 - Application - Quadratic Equations

May 6, 2011

I've made a fairly good Windows form application to solve quadratic equations, but I am having a hard time understanding the publication process microsoft uses in Visual Studio. I'd like to distribute my programm as freeware on my blog.

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Write A Program To Write In A Xml File?

Sep 14, 2010

I want to write a program to write in an xml file in this format:

<?xml version="1.0" encoding="utf-8" ?>
- <Orders>
<Item id="1" SKU="998123" Description="Super Widget" Quantity="100" />

[Code]....

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VS 2008 Write A Program To Create A Shortcut In The Startup Folder Of A Different Program?

Jun 15, 2009

how i can write a program to create a shortcut in the startup folder of a different program. So i have one program on my computer that should run at startup, i just need another program to create a shortcut to it, and then copy this shortcut into the startup folder.

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Write A Program For VB Class That Consists Of A Resistance Checker Program?

Sep 20, 2010

i have to write a program for my VB class that consists of a resistance checker program. I've searched like a madman to help me through this and I have found nothing >. The program consists of 2 combo boxes, the first one is the nominal resistance drop down list of the numbers :100, 150, 220, 330, 470, 680, 820 and 1000. The second list is of the tolerance numbers; +/- 0.4%, +/-0.6% and +/-0.8%. Now what i want to do is select a number from the first combo box and select the tolerance level of the second combo box and i input the resistor of said value into the text box. when i click the check resistor button it should display a message saying if the resistor is in or out of tolerance. For now I have the form all laid out and the values inputted into both combo boxes and i can go to run the program i am able to select said values. Now my problem is trying to get the right code so that i can check the resistors value.

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Read And Write To A Python Program Through Program?

Aug 10, 2011

I am currently making a GUI for Minecraft Coder Pack. MCP works off a system of batch files that launch python programs. I want to be able to read and write to these cmd windows throught vb.net. So that I can tell when a process has finished or to answer a yes, no question i nthe python program, with a gui from vb.net[code]\...

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Write A Program In Program That Works In Windows ME?

Jan 24, 2011

How do I write a vb10 program that works in windows me. I am getting an err message saying MSCOREE.DLL expects a newer version of windows.

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Quadratic Formula "Overflow Exception"

Oct 18, 2010

I have been trying to make a program to solve for the x intercepts of a quadratic formula and have gotten this far. Whenever i debug, it says "A first chance exception of type 'System.OverflowException'" It seems to be with the code shown in bold.

[Code]...

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How To Compute Income Tax

Oct 2, 2011

how can we compute tax using the values in the database.?

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How To Compute MI For A VB Application

Mar 3, 2009

Currently i am able to compute MI (Maintainability Index) at a VB Method and VB Function Level. I would like to know how this can be rolled up to the application level?

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Write To An XML [program]?

Dec 1, 2010

How could I write to that, like add another game to it? Like rewrite that but from textboxes but create a whole new game after that game.[code]\...

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Compute A Database Column In NET?

Apr 10, 2010

I have a Database named CarsType.accdb there are four fields in the data base Item_Name, Item_Num, Item_Qty, Item_Cost.

I am able to get the database to display my data in VisualBasic but I am not sure how to get the total cost to appear in my label (lblTotalCost). I prefer doing it in VB versus writing in my access program. All I am wanting to do it multiply item_qty * Item_Cost How would I go about doing that?[code]...

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Compute Cells Using DataGridView?

Jan 30, 2012

I have 3 column Qty,Price and Amount and i need to compute the amount per line using DataGridView, what are the possible events I may use?

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Rounding With Datatable Compute?

Jul 20, 2011

I need to round the result from compute.8/19, how can i round this result to two decimal.Is there any symbol i can use for compute function to recognize the rounding format, because not must be two decimal,sometime may one or in integer?

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VS 2010 - Compute Max Value Of A Column?

Mar 9, 2012

I've created a DataSet with DataTable and I'm adding values of DataRow - Zvodp [m] in a For loop. Data type of this column is Double. When I want to use Compute method like this:

TB.Text = DataTable1.Compue("Max(Zvodp [m])", Nothing)

I get this message:

Syntax error in aggregate argument: Expecting a single column argument with possible 'Child' qualifier.

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Example To Write XML Using Program 2008?

Aug 18, 2009

Using this example how would I go about updating an XML file using this example[code]...

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Program To Write In 4 Days?

Jul 4, 2010

My friend's birthday is coming up in 4 days. I am currently out of the country(on the other side of the world),and I want to give her a program for her birthday.

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Re-write F# Code In Program?

Aug 7, 2011

Some time ago, I did some F# programming, the following code is used to serialize/deserialize float32 array:#light

However, nowadays, I have to do some programming in VB.NET to serialize/deserialize float32 array again. As F# programming is not suitable for GUI, but GUI is necessary for my current programming.I want to know how I can rewrite the above code in VB.NET.For example, I have a float32 array, (I dont know what data type in VB.NET is equivalent to float32 array in F#) of (1.0, 2.0, 3.0); I want to serialize it using DataContractSerializer, then read it back so I can still get the same float32 array.

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Write A Conversion Program?

Mar 11, 2010

i want to write a program in visual basic .net 2003 console application that will take one variable and then a menu to ask what the user wishes to do.the menu is a conversion of currency i have a code that worked but i whenever i press the other option on the menu the screen just closes

here is the code :

Dim x As Double
Dim y As Double
Dim z As Double
Dim m As Integer

[code]...

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Write A Program About Mathematics?

Dec 29, 2010

i need a program that give n dot and take a Function for example:

give (x1,y1) and (x2,y2) take me it Function(for F(x)= ax+b)

give (x1,y1) , (x2,y2) and (x3,y3)take me if Function(for F(x)= x ^ 2+bx+c)

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Write A Program In .net Using Do While, For Next And Do Loop?

Oct 24, 2010

I need to write a program in vb.net using Do while, for next and do loop. Th eprogram will sum all the even integers between 2 and 50. This is what I have so far

Dim intCount, intNumber as integer
intCount = 0
intNumber = 0

[code].....

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Write A Program That Uses A Class?

May 2, 2009

I have to write a program that uses a class...and I've got no idea what it is or how to do that.My program is a simple interface that adds up the users selections and quantifies them into a membership fee.

Code:
Public Class Form1
Const FamMem As Integer = 90
Const SigMem As Integer = 50

[code]....

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Write A Program To Do CPU Benchmarking?

Dec 12, 2010

If I were to write a program to do CPU Benchmarking, what all would be done to do something like that? What kind of tests would you do to test the CPU?

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