The three rectangle rules differ only in the choice of sample point used to determine the rectangle height on equal-width subintervals. The left rule uses the left endpoint, the right rule uses the right endpoint, and the midpoint rule uses the center of each subinterval.
Conditions: The subintervals have the same width.; The method approximates area under a curve by sums of rectangles.
The three rectangle rules differ only in the choice of sample point used to determine the rectangle height on equal-width subintervals. The left rule uses the left endpoint, the right rule uses the right endpoint, and the midpoint rule uses the center of each subinterval.
Conditions: The subintervals have the same width.; The method approximates area under a curve by sums of rectangles.