Question

The area under the graph of f from a to b is denoted by the
symbol ___________.

Short answer

The area under the graph of f from a to b is denoted by the
symbol " $\underset{n\to \infty }{\lim }\sum _{i=1}^{n}f\left(u_i\right)∆x$ "

Step-by-step solution

Step 1. Given

The function f from a to b

Step 2. Find the symbol

The area under the graph of $f$ from a to b is denoted by the
symbol $\underset{n\to \infty }{\lim }\sum _{i=1}^{n}f\left(u_i\right)∆x$