How to go about second defferential equestion of the form d squared over dx squared +dy over dx + y = fx

To get the second derivative (D squared Y over DX squared) just take the derivative of the derivative. DY over DX is just the first derivative of the function

dalila is incorrect. the whisker on the left is very long, going all the way out to 5. the whisker goes from 5 to 30, so it has a spread of 25. the rest of the box plot values are closer together, so 5 is an outlier