Consider the area under the graph of f (x)=x – 3x, from x = 2 to x= 4. a. Estimate the area under the graph, on the given interval, by using 4 rectangles and left endpoints, L.

Riemann Sums is a special type of approximation of the area under a curve by dividing it into multiple simple shapes like rectangles or trapezoids and is used in integrals when finite sums are involved. Figuring out the area of a curve is complex hence t…

Bernhard Riemann's integral was the first systematic description of the integral of a function on an interval in the branch of mathematics known as real analysis.