• #### Piecewise Functions - Problem 1

##### Math›Algebra 2›Additional Topics
How to graph a two part piecewise function.
• #### The Inverse Sine Function - Concept

How to restrict the domain of sine so it will have an inverse function.
• #### Introduction to Rational Functions - Problem 3

##### Math›Precalculus›Polynomial and Rational Functions
How to identify the vertical asymptotes of a rational function.
• #### Graph of Logarithmic Functions - Problem 2

##### Math›Precalculus›Exponential and Logarithmic Functions
How to graph a logarithmic function.
• #### Solving Radical Equations - Problem 6

##### Math›Algebra›Radical Expressions and Equations
Solving equations with two radicals and checking both domains for extraneous solutions.
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• #### The Inverse Cosine Function - Concept

How to restrict the domain of cosine so it will have an inverse function.
• #### The Inverse Tangent Function - Concept

How to restrict the domain of tangent so it will have an inverse function.
• #### The Inverse Tangent Function - Concept

How to restrict the domain of tangent so it will have an inverse function.
• #### Piecewise Functions - Problem 2

##### Math›Algebra 2›Additional Topics
How to graph a three part piecewise function.
• #### The Inverse Sine Function - Concept

How to restrict the domain of sine so it will have an inverse function.
• #### The Inverse Cosine Function - Concept

How to restrict the domain of cosine so it will have an inverse function.
• #### Continuity - Problem 1

##### Math›Calculus›Limits and Continuity
How to show that a function is discontinuous at a point x=a because it is not defined at a. Explanation of continuity.
• #### Continuity - Problem 2

##### Math›Calculus›Limits and Continuity
How to show that a function is discontinuous at a point x=a because the limit as x approaches a does not exist.
• #### Continuity - Problem 3

##### Math›Calculus›Limits and Continuity
How to show that a function is discontinuous at a point x=a because its limit and its value at x=a are different. Explanation of continuity.
• #### The Inverse Tangent Function - Problem 2

How to use apply the inverse identities for tangent.
• #### Continuous Functions - Problem 2

##### Math›Calculus›Limits and Continuity
How to show that rational functions are continuous functions.
• #### The Inverse Tangent Function - Problem 2

How to use apply the inverse identities for tangent.
• #### Relations and Determining Whether a Relation is a Function - Concept

##### Math›Algebra›Graphs and Functions
How to determine whether a relation is a function.
• #### Graph of Logarithmic Functions - Problem 2

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
How to graph a logarithmic function.
• #### Graphing a Rational Expression - Problem 5

##### Math›Algebra 2›Rational Expressions and Functions
Finding the discontinuities or domain restrictions of rational functions, including vertical asymptotes and holes.