Introduction to Analysis : Integrability of Real Numbers (R)

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Example Questions

Example Question #1 :Riemann Integral, Riemann Sums, & Improper Riemann Integration

What conditions are necessary to prove that the upper and lower integrals of a bounded function exist?

Possible Answers:

,,, and

,,, andbe bounded

,,, andbe bounded

,,, and

,,, andbe bounded

Correct answer:

,,, andbe bounded

Explanation:

Using the definition for Riemann sums to define the upper and lower integrals of a function answers the question.

According the the Riemann sum whererepresents the upper integral andthe following are defined:

1. The upper integral ofonis

whereis a partition of.

2. The lower integral ofonis

whereis a partition of.

3. If 1 and 2 are the same then the integral is said to be

if and only if,,, andbe bounded.

Therefore the necessary condition for the proving the upper and lower integrals of a bounded function exists is if and only if,,, andbe bounded.

Example Question #1 :Riemann Integral, Riemann Sums, & Improper Riemann Integration

What term has the following definition.

,and. Over the intervalis a set of pointssuch that

Possible Answers:

Lower Riemann sum

Upper Riemann sum

Partition

Norm

Refinement of a partition

Correct answer:

Partition

Explanation:

By definition

If,and.

Apartitionover the intervalis a set of pointssuch that

.

Therefore, the term that describes this statement is partition.

Example Question #3 :Riemann Integral, Riemann Sums, & Improper Riemann Integration

What term has the following definition.

The__________of a partitionis

Possible Answers:

Norm

Upper Riemann Sum

Lower Riemann sum

Partition

Refinement of a partition

Correct answer:

Norm

Explanation:

By definition

If,and.

A partition over the intervalis a set of pointssuch that

.

Furthermore,

Thenormof the partition

is

Therefore, the term that describes this statement is norm.

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