• #### Evaluating Limits Algebraically, Part 1 - Problem 1

##### Math›Calculus›Limits and Continuity
How to evaluate the limit of a function using continuity and whether or not a function is continuous at the evaluated point.
• #### 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.
• #### Evaluating Limits Algebraically, Part 1 - Problem 2

##### Math›Calculus›Limits and Continuity
How to evaluate the limit of a function using continuity.
• #### 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.
• #### Evaluating Limits Algebraically, Part 2 - Concept

##### Math›Calculus›Limits and Continuity
How to evaluate the limit of a function at points where it is not continuous.
• #### Evaluating Limits Algebraically, Part 2 - Problem 3

##### Math›Calculus›Limits and Continuity
How to evaluate the limit of a radical function at points where it is not continuous by multiplying by the conjugate of the radical expression.
• #### Evaluating Limits Algebraically, Part 2 - Problem 2

##### Math›Calculus›Limits and Continuity
How to evaluate the limit of a function at points where it is not continuous.
• #### Solving a Logarithmic Equation - Problem 4

##### Math›Precalculus›Exponential and Logarithmic Functions
Connecting algebraic extraneous solutions to logarithmic equations with the graphs, asymptotes, and domain restrictions.
• #### Solving a Logarithmic Equation - Problem 4

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
Connecting algebraic extraneous solutions to logarithmic equations with the graphs, asymptotes, and domain restrictions.
• #### Adding and Subtracting Rational Expressions - Problem 4

##### Math›Algebra 2›Rational Expressions and Functions
Adding and subtracting rational expressions that already have common denominators with attention to domain restrictions.
• #### Deriving the Quadratic Formula - Concept

##### Math›Algebra 2›Quadratic Equations and Inequalities
How to derive the quadratic formula by completing the square.