CURVEFIT is a program for fitting experimental data to various Polynomials, Splines and Lagrange interpolating functions. CURVEFIT quickly calculates best fit coefficients and plots result on the screen or printer. A set of X and Y values are supplied by the user and the type of curve fit desired is selected. A least square fit is generated for an assumed polynomial function. The degree of the algebraic polynomial may be specified from 1 to 5. Once the coefficients are calculated any value of X can be specified to determine the corresponding value of Y using one of the four interpolation methods.
 

For interpolating data, options provided are Linear, Lagrange and Cubic Splines. Data is entered using an Excel style spreadsheet. Data can be imported and exported to Excel format.
 

CURVEFIT can be run on Intel Pentium and AMD Athlon based computers and a minimum 64 MB RAM running Microsoft Windows 2000/XP or Windows Vista.
 
Technical Support:
Technical support is provided for licensed users of the software for a period of sixty(60) days from the initial purchase date. The software Registration form must be returned to SYSTEK to be eligible for Technical Support. Economical Annual Technical Support plans are available after the initial 60-day period. Minor upgrades and maintenance releases are posted at SYSTEK's Web site for licensed users to download free of charge. You may need to contact SYSTEK to obtain a password for downloading and installing an upgrade from the web site. Major upgrades are issued twice a year at special prices to current licensed users. Call or write for details of Technical Support plans.
 
Purchase:
You may purchase CURVEFIT software. Multi-user licenses are also available. The software is available for purchase via direct download from our web site as well as via CD-ROM shipped to you in the mail. However, only one copy may be executed at any time on one computer.
 
We welcome comments and suggestions from users. Please give us your thoughts on how CURVEFIT can be improved further. Our goal is to make this software the most user-friendly program available for engineers.
 
Contact SYSTEK as follows:
SYSTEK Technologies, Inc.
Phone/fax: (928) 453-9587
Email: techsupport@systek.us
Web Site: www.systek.us