find the upper sum of (3+12x^2) between [0,1]

[jarrodking]

I am having trouble with finding the upper sum of (3+12x^2) between [0,1]
If someone could show me their method of finding this

 

[stapel]

I am having trouble with finding the upper sum of (3+12x^2) between [0,1]
If someone could show me their method of finding this

Try using the method they gave you in the textbook and in your class notes (which is probably similar to what is explained here). Where are you stuck in applying that information?

Please be complete. Thank you!