Please explain each step in depth. Thanks. Consider the following limit of a Riemann sum of a function f on [1, 3]: **I can't type the function on...

Please explain each step in depth. Thanks.

Consider the following limit of a Riemann sum of a function f on [1, 3]:

**I can't type the function on here.**

I can show attachment if you reply to my post please.

Identify f and express the limit as a definite integral.