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

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

Evaluate the summation.

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

Use NINT to evaluate the expression.

Evaluate the integral.

Evaluate the integral.