## What is a left hand rectangle?

Each rectangle’s height is determined by evaluating f(x) at a particular point in each subinterval. For instance, the Left Hand Rule states that each rectangle’s height is determined by evaluating f(x) at the left hand endpoint of the subinterval the rectangle lives on.

**What is the right Riemann sum?**

In a right Riemann sum, the height of each rectangle is equal to the value of the function at the right endpoint of its base. Created with RaphaĆ«l y y y x. In a midpoint Riemann sum, the height of each rectangle is equal to the value of the function at the midpoint of its base.

### How do you do right hand sums?

To summarize: to quickly find a RHS, take the value of the function at the right endpoint of each sub-interval and find the sum of these values. Then multiply the sum by the width of a sub-interval/rectangle. The value of the function at the left-most endpoint of the original interval will never be used.

**What is right hand approximation?**

Another possibility is to use the value of the function at the right endpoint of each subdivision as the height. This is called a right-hand approximation. Finally, a third possibility is to use the value of the function at the midpoint of each of the subdivisions as the height. This is called a midpoint approximation.

## What is right end point?

In the right-endpoint approximation of area under a curve, the height of each rectangle is determined by the function value at the right of each subinterval. Note that the right-endpoint approximation differs from the left-endpoint approximation in (Figure).

**How do you do right hand sum?**

### Why are rectangles used in Riemann sums?

A Riemann sum is a way to approximate the value of an an integral. This approximation is performed by fitting rectangles beneath the curve and adding their respective areas(length X width) together.

**What are Subintervals?**

Definition of subinterval : an interval that is a subdivision or a subset of an interval.