Solve quadratic equations, Using VB of course

ok, here is the code....
i could try to make it solve x^3 equations or even x^5...I know u gonna find it easy but not the maths

PS: U should already know how 2 solve quadratic equations to understand this code,

First add 3 textboxes named: txtx2, txtx and txtc, also add a label called lblsolution

Option Explicit

Public a As Double
Public b As Double
Public c As Double
Public discriminant As Double
Public sol1 As Double
Public sol2 As Double
____________________________________________

Private Sub cmdsolve_Click()
a = Val(txtx2.Text)
b = Val(txtx.Text)
c = Val(txtc.Text)
discriminant = b ^ 2 - (4 * a * c)
If discriminant < 0 Then
lblsolution.Caption = "There is no solution !"
ElseIf discriminant = 0 Then
sol1 = (-b ) / (2 * a)
lblsolution.Caption = "Solution: " & "x= " & Format(sol1, "0.0000")
Else
sol1 = (-b + Sqr(discriminant)) / (2 * a)
sol2 = (-b - Sqr(discriminant)) / (2 * a)
lblsolution.Caption = "Solution: " & "either: x= " & Format(sol1, "0.0000") & vbCrLf & " or: x= " & Format(sol2, "0.0000")
'Do you have any better suggestions for rounding up the numbers? 3 or 4 dp would do.
End If
End Sub
____________________________________________
Good Luck
.if u need me to explain anything, just say

he is our mathamatition :S, good work islam! but im not sure anyone gets what u mean man

No offence but people in this Forum seem to be all happy no problems...
Thnx btw

mathematician?

If he really was a mathematician, then he'd create a quick program that could calcluate x^n equations where the user enters n, or how many pieces there are...

It's not that difficult.

sorry about my english
U love to critisise ppl dont u :S

Please... it's constructive criticism.

I'm telling you people what you can be doing to make your code all that much better and more efficient than what you're posting.


Just a little FYI, I was taking college-level calculus courses in high school...

hey some one actaully knows maths here

im sorry man i won't do it again....

We VBForum.com addicts, such as timeshifter and myself, are very talented programmers who know our stuff. Criticism is a harsh way to put it. More like "helping you out" or "help on coding it better".

And yes we are REALLY REALLY addicted to vbforums. I literally spend 99% of my internet time on that site alone. RobDog888 and dglienna are literally posting 24/7 on there too

hehe im like that to pixel2life.com

u know what......Get a life

Only testing...

ok guys, well this seems to be a semilar question that i was faced with.
how would you write a program for a questions like these?

Write a program that solves a quadratic equation AX2 + Bx +C =0, i.e., find x fir A, B, C. Ask the user to enter the values of A, B, C and display the two values of x. you must also check if you are going to find the square root of a negative value. F you have to find the square root of negative values, multiply by (-1), find the square root and express the result as real and imaginary (complex number). You should also produce a flowchart of your algorithm.

And Write a program that inputs up to 15 temperatures in degrees Fahrenheit and converts it to Celsius using C=9/5F + 32. Express in degree F. Display in a picture box each Fahrenheit and the corresponding Celsius in deg.C

Well Dr younker this will solve your first problem, jus follow the tutorial above, seems to me that this is your homework

now i would love to help you but dont expect us to give you all the answers, you have to learn it the hard way jus like everyone else... anyway here is a link for a program to download to convert from Celcius to Fahrenheit:
http://pscode.com/vb/scripts/ShowZip.asp?l...=tp%2FC72568041
but make sure you look at the code not just copy it

Mukhtar

i understand where your coming from baller_tk, cuz i really want to be a master at this one day, and i know the only way to do that is to work hard at it. so trust me i will be breaking my neck to learn this.

and the example i gave is not really my home to give in, its really an example our lecturer gave us and said that our finals which is in the next 3 weeks will come very semilar to those two questions, so am trying to get help with them so that i can handle any other questions that should be coming for finals. all i need to do is to get a understanding as to write different programs.

i really wish my lecture would go through step by step questions with the class, instead of just putting example questions in front of us and then tell us to look them up, to me what he is trying to say is learn on your own.