If f is a positive, continuous function on an interval [a, b], which of the following has a limit equal to the actual area under the curve from a to b as the number of rectangles approaches infinity? LRAM, RRAM, MRAM

Evaluate the integral.

Approximate the area under the curve over the given interval using 3 midpoint rectangles.

Use NINT to evaluate the expression.

Use the graph of the integrand and geometric areas to evaluate the integral.

Evaluate the summation.

Evaluate the integral.