It looks like you're new here. If you want to get involved, click one of these buttons!

- 140.7K All Categories
- 103.5K Programming Languages
- 6.5K Assembler Developer
- 1.9K Basic
- 39.9K C and C++
- 2.9K C#
- 7.9K Delphi and Kylix
- 4 Haskell
- 9.7K Java
- 4.1K Pascal
- 1.3K Perl
- 2K PHP
- 538 Python
- 37 Ruby
- 4.4K VB.NET
- 1.6K VBA
- 20.8K Visual Basic
- 2.6K Game programming
- 315 Console programming
- 90 DirectX Game dev
- 1 Minecraft
- 111 Newbie Game Programmers
- 2 Oculus Rift
- 9K Applications
- 1.8K Computer Graphics
- 738 Computer Hardware
- 3.4K Database & SQL
- 535 Electronics development
- 1.6K Matlab
- 628 Sound & Music
- 257 XML Development
- 3.3K Classifieds
- 198 Co-operative Projects
- 196 For sale
- 190 FreeLance Software City
- 1.9K Jobs Available
- 602 Jobs Wanted
- 207 Wanted
- 2.9K Microsoft .NET
- 1.8K ASP.NET
- 1.1K .NET General
- 3.4K Miscellaneous
- 8 Join the Team
- 354 Comments on this site
- 69 Computer Emulators
- 2.1K General programming
- 187 New programming languages
- 621 Off topic board
- 186 Mobile & Wireless
- 60 Android
- 124 Palm Pilot
- 338 Multimedia
- 154 Demo programming
- 184 MP3 programming
- 0 Bash scripts
- 23 Cloud Computing
- 53 FreeBSD
- 1.7K LINUX programming
- 370 MS-DOS
- 0 Shell scripting
- 321 Windows CE & Pocket PC
- 4.1K Windows programming
- 930 Software Development
- 416 Algorithms
- 68 Object Orientation
- 90 Project Management
- 93 Quality & Testing
- 262 Security
- 7.7K WEB-Development
- 1.8K Active Server Pages
- 61 AJAX
- 2 Bootstrap Themes
- 55 CGI Development
- 28 ColdFusion
- 224 Flash development
- 1.4K HTML & WEB-Design
- 1.4K Internet Development
- 2.2K JavaScript
- 35 JQuery
- 298 WEB Servers
- 145 WEB-Services / SOAP

sundog
Member Posts: **3**

Can someone help me to write a program to calculate the value of x for which f(x) = 0 zero for the general quadratic equation. Use the quadratic formula.

a.The program should have input boxes for a, b and c where a, b, and c are the coefficients of x2, x1 and x0

b.And out put the solutions for x.

c.if the solution contains the square root of a negative number then the program should print the message this equation has complex roots and out put the complex roots.

plz i'm really in need of help

a.The program should have input boxes for a, b and c where a, b, and c are the coefficients of x2, x1 and x0

b.And out put the solutions for x.

c.if the solution contains the square root of a negative number then the program should print the message this equation has complex roots and out put the complex roots.

plz i'm really in need of help

Terms of use / Privacy statement / Publisher: Lars Hagelin

Programmers Heaven articles / Programmers Heaven files / Programmers Heaven uploaded content / Programmers Heaven C Sharp ebook / Operated by CommunityHeaven

© 1997-2015 Programmersheaven.com - All rights reserved.

## Comments

6,349:

: a.The program should have input boxes for a, b and c where a, b, and c are the coefficients of x2, x1 and x0

:

: b.And out put the solutions for x.

:

: c.if the solution contains the square root of a negative number then the program should print the message this equation has complex roots and out put the complex roots.

:

:

: plz i'm really in need of help

:

:

Place a couple of TLabels, TEdits and one TButton on the form. In the TButton.OnClick event code the following:

Use the StrToFloat() to convert the TEdit.Text property to doubles. This will give you the a, b, c coefficients as numbers, so you can calculate with them.

Then comes the maths part, just like you would do on paper. You might need an if-then-else-if-then-else statement to check the various answer possibilities:

[code]

if D < 0 then

begin

// Do something

end else if D = 0 then

begin

// Do something else

end else { no need for another if-then, because if the program gets

this far, D is not smaller or equal to 0, thus greater than 0 }

begin

// Third do something

end;

[/code]

Finally use FloatToStr() to convert the results back to strings to show them using another few TLabels.

Check out the help files for more info on these objects, functions.