Introduction to Analysis : Integrability of Real Numbers (R)

Study concepts, example questions & explanations for Introduction to Analysis

varsity tutors app store varsity tutors android store

All Introduction to Analysis Resources

12 Practice Tests Question of the Day Flashcards Learn by Concept

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 

,  and 

,  and  be bounded

,  and  be bounded

,  and  be bounded

Correct answer:

,  and  be 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 where  represents the upper integral and  the following are defined:

1. The upper integral of  on  is

 where  is a partition of .

2. The lower integral of  on  is

where  is a partition of .

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

if and only if ,  and  be bounded.

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

Example Question #2 : Riemann Integral, Riemann Sums, & Improper Riemann Integration

What term has the following definition.

 and . Over the interval  is a set of points  such that

Possible Answers:

Upper Riemann sum

Lower Riemann sum

Refinement of a partition

Partition

Norm

Correct answer:

Partition

Explanation:

By definition 

If  and .

A partition over the interval  is a set of points  such 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 partition   is

Possible Answers:

Norm

Partition

Refinement of a partition

Lower Riemann sum

Upper Riemann Sum

Correct answer:

Norm

Explanation:

By definition 

If  and .

A partition over the interval  is a set of points  such that

.

Furthermore, 

The norm of the partition 

 is

Therefore, the term that describes this statement is norm.

All Introduction to Analysis Resources

12 Practice Tests Question of the Day Flashcards Learn by Concept
Learning Tools by Varsity Tutors