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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by AdamCrain[/i] [br]I am interested in using a quadratic binding equation to fit binding data although origin should have this equation in its functions already, it doesn't so now I am trying code builder. The equation I am using is y = ((E + x + KD) + ((E + x + KD)^2 - 4*E*x)^(0.5))/2*E. For some reason it just keeps saying fit did not converge, reason unknown. Here are some general data points. x: 60, 30, 22.5, 15, 7.5, 0 y: 1, 0.84, 0.7, 0.54, 0.29, 0 I don't know what to do about this and it is so annoying because binding studies are so common this equation should be included in the software. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.