# Ch 3: Vectors in Linear Algebra: Tutoring Solution

### About This Chapter

## How it works:

- Begin your assignment or other linear algebra work.
- Identify the vector concepts that you're stuck on.
- Find fun videos on the topics you need to understand.
- Press play, watch and learn!
- Complete the quizzes to test your understanding.
- As needed, submit a question to one of our instructors for personalized support.

## Who's it for?

This chapter of our Linear Algebra Tutoring Solution will benefit any student who is trying to learn vectors in linear algebra and earn better grades. This resource can help students including those who:

- Struggle with understanding scalars and vectors, the dot product of vectors, the basis of a vector space or any other vectors in linear algebra topic
- Have limited time for studying
- Want a cost effective way to supplement their math learning
- Prefer learning math visually
- Find themselves failing or close to failing their vectors in linear algebra unit
- Cope with ADD or ADHD
- Want to get ahead in linear algebra
- Don't have access to their math teacher outside of class

## Why it works:

**Engaging Tutors:**We make learning vectors in linear algebra simple and fun.**Cost Efficient:**For less than 20% of the cost of a private tutor, you'll have unlimited access 24/7.**Consistent High Quality:**Unlike a live algebra tutor, these video lessons are thoroughly reviewed.**Convenient:**Imagine a tutor as portable as your laptop, tablet or smartphone. Learn vectors in linear algebra on the go!**Learn at Your Pace:**You can pause and rewatch lessons as often as you'd like, until you master the material.

## Learning objectives

- Define and determine the difference between scalars and vectors.
- Understand how to perform operations on vectors in the plane.
- Study the definition and application of the dot product of vectors.
- Explore vector spaces.
- Learn how to find the basis of a vector space.
- Examine orthonormal bases.
- Understand the Gram-Schmidt process orthonormalizing vectors.
- Define linear combinations and span, as well as linear dependence and independence.

### 1. Scalars and Vectors: Definition and Difference

In this lesson, we will examine scalars and vectors, learn why it is important to know the difference between the two and why remembering to add a direction to many of your exam answers could be the reason you get it right or wrong.

### 2. How to Find a Column Vector

A column vector is a vertical notation for a vector. In this lesson, we will go through what a column vector is and how to do some mathematical operations with column vectors.

### 3. Performing Operations on Vectors in the Plane

After watching this video lesson, you should be able to add, subtract, and multiply your vectors. Learn how easy it is to perform these operations and what you need to keep in mind when performing these operations.

### 4. Difference Between a Row & Column Vector

Learn how row and column vectors differ by viewing them through matrix notation. Then explore some unique interactions between row and column vectors by seeing how a couple types of matrix operations work on them.

### 5. The Dot Product of Vectors: Definition & Application

After watching this video lesson, you will be able to find the dot product of vectors both algebraically and geometrically. Learn the difference between the two and what you need in order to calculate them.

### 6. Vector Spaces: Definition & Example

In this lesson, we'll discuss the definition and provide some common examples of vector spaces. We'll go over set theory, the axioms for vector spaces, and examples of axioms using vector spaces of the real numbers over a field of real numbers.

### 7. Finding the Basis of a Vector Space

In this lesson we'll start by reviewing matrix reduced row echelon form, which is integral to finding a basis of a vector space. Then we'll work through a problem together to see exactly how finding a basis is accomplished.

### 8. Orthonormal Bases: Definition & Example

In this lesson we show how independent vectors in a space can become a basis for the space and how this basis can be turned into an orthonormal basis. Having an orthonormal basis is useful in many applications involving vectors.

### 9. The Gram-Schmidt Process for Orthonormalizing Vectors

Linearly combining things is something we do quite naturally. When the things are vectors, there is a fantastic way to organize the vectors before combining them. In this lesson, we'll show how to orthonormalize vectors using the Gram-Schmidt process.

### 10. Linear Combinations & Span: Definition & Equation

This lesson will cover the definitions of linear combinations and spans in terms of vector spaces, using a real world example and then a mathematical example. You will learn the official definitions and how to apply them in mathematics.

### 11. Linear Dependence & Independence: Definition & Examples

Linear dependence and independence are based on whether or not there is more than one solution to a system of equations. In this lesson, we'll look at how you can determine whether or not a system is independent and work through some examples.

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### Other Chapters

Other chapters within the Linear Algebra: Tutoring Solution course