Data Visualization using matplotlib - Section 4: Curves , Equations, Annotation, ScientificNotations

I have created a short course for Data Visualization using matplotlib. There are total 9 sections.
Section 1a: Line Charts
Section 1b: Saving the charts, Emojis, Multi colored polygons
Section 2: Pie Charts, Interactive charts
Section 3: Bar Charts, Horizontal, Vertical, Stacked
Section 4: Curves , Equations, Annotation, Text and Scientific
Notations
Section 5: Histograms, Using Histograms on image data
Section 6: Box Plots, Violin Plot
Section 7: Object Oriented Interface, Subplots, ScatterPlot
Section 8: Animation and interaction with plots
Section 9: 3D Plotting