User Equation N Value
Mar 11, 2010I wanted to read input equation by user A+B and assign input user value to A and B to ask them to add and give answer. But I just can't get the code to work. I using VS2005 and VB.Net.[code]
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VS 2005 User To Input Equation Such As A+B Into The Box?
Dec 29, 2009I wanted to have a textbox that can be input in terms of numbers. Then I need to use the number user input into a certain equation. How I can do this??
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?
Develop A Simple Math Calculator That Will Allow The User To Input The Right-hand-side (RHS) Of An Equation Into A Textbox?
Dec 12, 2011I 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
into the application by the user via another textbox.For example, if the user wants to evaluate the following expression,
y = 3 + 4*x + 5*x^2
then they would input into the textbox the RHS of the equation
3 + 4*x + 5*x^2
and then enter a value of x into the another textbox and click on the calculate button.I tried this:
answer = EquationTextBox.Text
but it doesn't work.
Iterate Through An Equation?
Apr 26, 2012I want to iterate through an equation and modify a number e.g. Multiply it by 10, where there is one. How do I do this?
View 4 RepliesUsing Function For More Than One Equation?
Apr 26, 2011Can I use a function for more than one equation?
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)
Even Odd 2P + Q
Odd Even P + 2Q
Even Even P + Q When P not = Q
P When P = Q
odd Odd P + Q When P not = Q
3Q When P = Q
Equation With Multiple Possible Results
Jul 30, 2011I have a decent understanding of the logic, the content. I'm working on a puzzle and I'd like to write a short program. I'm looking to fill in the following variables: AB.CDE FG.HIJ (they're part of coordinates, and the puzzle is part of a geocache)
The puzzle asks you to determine which numbers correspond to certain colors, like this:
[code...]
I need to define A-J as >= 0 and <=9. I also need to say that each color is >= 0 and <=9, but that no color can be equal to another color (purple ≠yellow, orange, etc). some number combinations won't work. Purple and yellow can't be 2 and 5 respectively, because that'd produce a negative number. I'm guessing that there will be more than one possible result. So how do I create an equation that calculates this.
Convert String To Equation?
Apr 14, 2009I would like to read a user's input equation or expression as a string (such as "y=5*(x+6)" or "cos(3)^2") and have the program evaluate it mathematically. Does .Net have any classes that could do this? Obviously, the compiler can already take a programmer's coded equation and evaluate it. Of course this is a different matter, but is there not a way to harness that same power with runtime user-created equations? Serialization or anything?
The other option (I guess) would be to create my own equation-generator - breaking an equation down into a binary tree of the numerical values and the operations I suppose. Aside from being a nontrivial task, my program needs optimal performance as these equations are in large loops. At the very least, this would add several conditional evaluations to each equation run - dunno if that adds up.
How To Make An Equation With Timer
Mar 16, 2010The project is "kWh counter", that is, a simple program that calculates the power usage.The incoming numbers are the Power of the appliance (lightbulb) and the voltage (230/120).The formula is W=P*t that is multiplication of the power and the time it is used.I thought to connect it with a timer and the passing secconds multyply with the power, and, write the ussage on a label.This would be something like a simple digital power counter.Note that the voltage is not necesary.I am from europe where the standards are 230V.
View 7 RepliesHow To Solve An Equation That Is A String
Feb 9, 2011I have an equation in the form of a string:
Dim Answer as Integer
Dim AnswerBox as New RichTextBox
'... Settings for AnswerBox
[code].....
Inputting The Radiobuttons Into Equation
Jun 8, 2011My assignment is to get the Get Monthly Income (Num1)Get Monthly Home Rent/Mortgage (Num2) Get Other Monthly Payments (alimony, child support, student loans) (Num3) Display Allowable Monthly Car Payment Display Maximum Car Value (interest rate based on credit) (answer) Public Class Form1
[Code]...
Use Day & Month In Simple Equation?
Mar 26, 2012What I need to do is automatically generate a specific PIN number based on the current date. The formula goes like this: MMDD + 1234 = PIN. (ex. Date = 3/26/2012 -> 0326 + 1234 = 1560; With 1560 being the PIN number. I then need the PIN number to display as text, but that's the easy part, I really just need assistance with getting the date information in the proper format for the equation.
View 2 RepliesUsing MS Equation Editor In VS2008?
Nov 17, 2009after a lot of research on formatting Maths equations, apparently using MS equation edior is the easiest way to do it. But, I have no idea how to use it in VS 2008.
View 2 RepliesVS 2010 - MouseMove Equation ?
Dec 19, 2010I am rotating a picture dependant on the mousemove.
Private Sub PictureBox1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseMove
[code]...
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.
Best Commercial DLL To Calculate Equation Of Any Complexity?
Mar 9, 2011commercial dll to be used in vb.net to calculate equations of any complexity? pass an equation as a string form and to get the final result.
View 1 RepliesConcatenate A Equation And Answer To Text Box?
Mar 22, 2011In 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.
The class is going to build a program that calculate how many rabbits are born in a family. So when they click the button it shows in a text box the actual equation and then the answer after the equal sign that where i assume concatenation comes in.Here's the code I've thrown together for when the buttons pressed:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim RabitAmount As Integer
Dim ShowEquation As String
[code]....
I got the equation to answer it self and show in the text box but it won't show the equation?
Display An Equation Prior To Solving It?
Jul 19, 2011I want to display an equation prior to solving it. Obviously in MS word etc I can use equation editor to write an equation, but I'm writing my own program.
Is there an easy way to display an equation. Obviously I could use text to write eg as text "a=b^2-3(c-d)/5" and everyone here would have little problem interpretting what I want but I want this to be accessible to 12 year old children.
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.
Displaying The Equation And Answers In A Listbox?
Apr 27, 2012First off the listbox needs to show the equations for the number entered between 0 and 12 example:
1+1=2
1+2=3
1+3=4
[Code]....
Equation - How To Display Number 7 In Label
Feb 20, 2009I put this mathematical formula in VB 2008 Express Form and I have the result show in TextBox and every thing is good so far and my question is if I have a table of numbers for example if the answer in the TextBox is 0.00098 and my table show :
0.0001 to 0.00100 = 7
0.00101 to 0.002 = 8
0.00201 to 0.003 = 9
Etc
I need the number 7 to be displayed in label 1 so how can I do that?
Evaluating An Algebraic Equation And Getting The Answer?
Jun 19, 2009I store a formula in the database such as the following:GrossIncome+(Overtime/0.5)-Deductions=BasicNetIncome
I am able to substitute the string representations with actually values entered, thus:1000+(150*0.5)-100=BasicNetIncome
Then I remove the '=BasicNetIncome', thus:
1000+(150*0.5)-100
How can evaluate the above equation to return a result:
[Code]...
Get Program To Re-adjust The Boolean Equation On The Fly?
May 30, 2012I have a boolean condition that I want tthe program to recognize changes when they occur. Currently in order for the program to recognize a change I must restart the program.I have tried using a public timer but that didn't work.
Specifically.....
D1A.Close()
D1A = File.OpenText("MEASURE UNITS.TXT")
D1B = CStr(D1A.ReadLine)
[code]....
I am re-writting the text file "MEASURE UNITS.TXT" labeled (D1B). Depending on this boolean equation different options become available in other parts of the program.I need the program to re-adjust the boolean equation on the fly.
How To Find Equation Of Curve Given Data Set (X / Y)
Jan 30, 2011I am trying to write code in vb.net to find a equation when data points are given. For example (1,5),(2,6) etc. I need to find a equation(not necessarily always linear) from the given points. How do I calculate a trendline for a graph? How to get equation.
View 1 RepliesIncome Tax App - Adding Equation For Each Case
Jun 8, 2011I have to create an app that computes the amount income tax that a person has to pay, depending on salary. Income tax should be calculated for each portion of income in each range.
Here are the following income ranges and taxes rates:
Not over $7825=10%income tax
$7825-31852 = 15%income tax
$31851-77100 = 25%income tax
$77101-160850 =28%income tax
$160850-349700=33%income tax
Over $349700 =35%income tax
Here is the code so far:
Public Class IncomeTaxForm
Private Sub calculateButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles calculateButton.Click
Dim IncomeTax As Double = 0
Dim salary As Double = 0
[Code] .....
I keep getting zeros. Do I have to add another equation for each case?
Odd Number Created With Equation In Dim Statement?
Dec 16, 2011I have some variable that when divided I get this symbol: -1.#IND when you look at the variable in debug. This only happens when I put the equation in the Dim statement.
[Code]...
I don't have a problem. Why when I put the equation up in the declaration area it sets it to -1.#IND (I assume this is infinite or NAN or some such). I'm curious as this is the only time I've had difficulty with this.
VS 2005 Applying Math Equation?
Jul 17, 2010i got the following equations and want to apply it in VB.net, how do I construct it in VB.net.
[code..]
VS 2008 - How To Solve Equation That Is In Textbox
Oct 31, 2009Let's say I wrote 1+1 in a text box1 how to get answer in a text box2?
View 10 RepliesVS 2008 Fourth Degree Equation
Nov 20, 2009Is anybody good with math?
CODE:
I'm not sure if this is the right thread for this.
Compounding Numbers Formula/loop/equation ?
Nov 26, 2009I am trying to make a loop to calculate the total costs for 12 days of costs. It has to compound sort of though. I need the total = cost for day 1(includes day 1) + cost for day 2(includes day 1 and 2) + cost for day 3(includes day 1, 2, and 3).....up to day 12. I have a for/next loop in my array, but it calculates the total for 12 days, but I need it to add as explained above. I have been strategizing and the program needs V= day 1 then add V to T. Then V needs to clear and then loop again so V=day 1 + day 2 then add V to T. Then V needs to clear and loop again so V=day 1 + day 2 + day 3 then add V to T and clear V.........up until all days are added together. If anyone has any suggestions or any idea of what I am talking about please comment! Here is the link to another forum that might explain the program in more detail:
Here is the code for my program so far:
Making A Program To Solve Second Grage Equation
Jul 1, 2012So im making a program to solve second grage equations,its already working but i want to make it better,heres my idea.Right now the user must input the three equation coefficients (in a equation like 2x+2x+2 they are 2,2 and 2),i want to make it possible for them just to insert the equation like 2x+2x+2 and the computer will get that data,and extract the coefficients from it. [code]
View 1 RepliesGet X Variable From Textbox6 Into Equation And By Pushing Button 1
Jul 21, 2012I need to get the x variable from textbox6 into the equation and by pushing button 1, the finish product goes into label2, which is lets say 15min and 45 seconds. I need 15:45 to countdown to 0, and form1 pops up.
View 6 RepliesMath Equation For Temperature Converter Buttons?
May 4, 2010I've pretty much have this assignment done. My main problem is to get the math to pan out and it's making me crazy. It's gotten to the point of staring blankly at my screen for the last 4 hours.I'm hoping that someone would be willing to take a quick peak and give me a shove in the right direction. The purpose is to type in a number in a textbox then choose using a fahrenheit radio button and a celsius button to calculate the corresponding conversion in a label box.
[Code]...