How to Add Fitting Lines and Formulas in origin

1, click the toolbar tool-Fitting Function Builder to enter the equation construction page;

2. Select the first item, create a new function, and then click next.

3. Select user-defined in the first column, and the equation can be named in the second column (English only), here named "NewFunction5", and the second column equation; Select for the function type; Click Next.

4. Enter the parameter setting page. The first column and the second column are independent variable X and dependent variable Y respectively, and the third column can set formula parameters (which must be English input method). Take the unary quadratic equation as an example, set parameters A, B and C, and click Next.

5. Enter the equation input page, enter your own equation in the red line box (it must be an English input method), and click Next.

6. Click Analysis-Fitting-Nonlinear Curve Fitting on the toolbar to open the dialog box.

7. Then open the curve fitting dialog box, and you can see your own equation "NewFunction5" within the user-defined range.

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