• #### The Midpoint and Distance Formulas in 3D - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How to find the equation of a sphere with center (a,b,c) and radius r.
• #### The Distance Formula in Polar Coordinates - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to derive the distance formula for polar coordinates.
• #### Change of Base Formula - Problem 3

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
Examples of logarithmic notation, including a variety of bases, and the change of base formula.
• #### Change of Base Formula - Problem 1

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
How to use the change of base formula to condense two logs into one.
• #### The Distance Formula in Polar Coordinates - Problem 3

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to derive the polar equation of a circle given its center and radius.
• #### Formulas - Problem 1

##### Math›Pre-Algebra›Solving Equations and Inequalities
Solving distance = rate times time or area of a triangle equations for one of the variables
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• #### The Quadratic Formula - Problem 10

Identifying which quadratic solving method would be best in different circumstances.
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• #### The Quadratic Formula - Problem 4

Simple radical form versus decimal approximations.
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• #### Distance Formula - Concept

##### Math›Geometry›Pythagorean Theorem
How to derive the equation for the distance between two points using the Pythagorean Theorem.
• #### Conic Section Formulas - Problem 3

##### Math›Precalculus›Conic Sections
Classifying conics from general form equations.
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• #### The Distance Formula in Polar Coordinates - Problem 1

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to find the distance between two points, (3, 7*pi/6) and (5, pi/2), given their polar coordinates.
• #### Distance Formula - Concept

##### Math›Trigonometry›Pythagorean Theorem
How to derive the equation for the distance between two points using the Pythagorean Theorem.
• #### The Quadratic Formula - Problem 8

Interpreting the +, - symbol as two expressions to simplify.
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• #### The Distance Formula in Polar Coordinates - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to find the distance between to points given their polar coordinates.
• #### Conic Section Formulas - Problem 3

##### Math›Algebra 2›Conic Sections
Classifying conics from general form equations.
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• #### Conic Section Formulas - Problem 2

##### Math›Precalculus›Conic Sections
How to re-write a conic as two functions to graph using technology.
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• #### Conic Section Formulas - Problem 2

##### Math›Algebra 2›Conic Sections
How to re-write a conic as two functions to graph using technology.
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• #### Midpoint Formula - Problem 1

##### Math›Algebra 2›Graphs of Linear Equations
How to find the midpoint of two points.