What is a good software for curve fitting? I am looking for a good software for fitting curves and would like to hear what software other people recommend. I want to be able to fit 4- and 5

Curve Fitting Functions Contents 1. Origin Basic Functions Allometric1 3 Beta 4 Boltzmann 5 Dhyperbl 6 ExpAssoc 7 ExpDecay1 8 ExpDecay2 9 ExpDecay3 10 ExpGrow1 11 ExpGrow2 12 Sample Curve Parameters Number: 8 Names: y0, x0, A1, t1, A2, t2, A3, t3 Feature List and Tutorial Manual By OriginLab Corporation. NEW FEATURES IN ORIGIN 6.1 Enhanced Exchange of Data, Graphs, and Tools Curve Fitter About 200 built-in fitting functions and create/save user-defined models; Models in spectroscopy, This tutorial was written by Carolina Penteado, University of Stuttgart and intern at Altair / Germany CURVE FITTING FOR STRESS STRAIN EXPERIMENTAL DATA WITH HYPERMATH The stress vs. plastic strain law is where is the true stress, the plastic deformation, "a" the value of when the Curve Fitting Origin provides six built-in curve fitting models: One Set of Sites, Two Sets of Sites, Sequential Binding Sites, Competitive Binding, Dissociation and Enzyme Assays. To invoke one of these models, click on the appropriate button in the DeltaH window. Origin for a variety of applications in this course. Purposes of this document are to introduce you to two of the primary capabilities of ORIGIN software, namely plotting and curve-fitting capabilities, and to illustrate applications of Origin in conjunction with spread-sheet programs such as Microsoft EXCEL. Now we'll go back to the Curve Fitting Tool and open the Analysis window. Initwe'llchoose"?t2(yvs. xwithweights)",andsettheanalyze points to be: 0:0.5:10 (between 0 to 10 in jumps of 0.5). After that we'll Curve Fitting Toolbox Tutorial Many scientists fit curves more often than the use any other statistical technique. Yet few statistical texts really explain the principles of curve fitting. This Guide provides a concise introduction to fitti