I really need some help answering the following question. There is an example of how it should be completed but I don't understand it. The example has a diagram and advises the use of either Trapezium rule or Simpson's rule.

Question: Use a numerical method to find the area enclosed by the graph ofy=x² sinx, thexaxis and the linesx= 1 andx= 2.

Use an interval of 0.4

Thank you for your help!