Both a. and b. are correct. a., b. and c. are all correct. At least one of
a., b. and c. is correct IF you remove the repeating None of the above

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Before watching the videos, think about and answer these questions to the best of your ability. Note: in these questions, the left hand side of the first interval is denoted by .

Consider the function . Which of the following is a correct expansion of the Riemann
sum over the interval using four subdivisions of equal length?

Which notation best represents the left Riemann sum for the function
over the interval using four subdivisions of equal length where , , and so
on?

None of the above