There could be several reasons for this. One possibility is that you have not specified the correct variables for your function. Another possibility is that you have not called the "plot" function after defining your function. Make sure you have all the necessary components in place for your plot to show up.
This could happen if you have made a mistake in your function definition, such as using the wrong mathematical operator or forgetting to include necessary parentheses. Double check your function definition to make sure it is correct.
There are a few possible reasons for this. One reason could be that your function is not accurately representing the theoretical model. Another possibility is that you have made an error in your data entry or graphing process. It is important to carefully check your function and data to ensure accuracy.
Error messages can occur for a variety of reasons. It could be due to a mistake in your function definition, an issue with your data, or an error in your code. Read the error message carefully to determine the source of the problem and make any necessary corrections.
There are a few ways to improve the appearance of your plot. You can adjust the colors, labels, and font sizes to make the plot more visually appealing. Additionally, you can add a title and a legend to make the plot easier to interpret. There are also various libraries and tools available that can help you create professional-looking plots.