Question

Given the table below for selected values of f(x), use 6 left rectangles to estimate the value of : integral from 1 to 10 f(x)dx

x 1 3 4 6 7 9 10
f(x) 4 8 6 10 10 12 16

Numerical answers expected:

Answer 1

There are lots of good online Riemann Sum calculators, such as this one at

https://www.emathhelp.net/calculators/calculus-2/riemann-sum-calculator/

Answer 2

I know that "a" is 1 and "b" is 10 and "n" is equal 6 but
-how would it be the function to put in the calculator
- and would be Left Riemann Sum, right?

Answer 3

70