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• #### The Number e and the Natural Logarithm - Concept

##### Math›Precalculus›Exponential and Logarithmic Functions
How the number e is defined.

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• #### Adding and Subtracting - Concept

##### Math›Pre-Algebra›Whole Numbers
Using the number line to represent adding and subtracting whole numbers
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• #### Compound Interest (Finite Number of Calculations) - Problem 7

##### Math›Precalculus›Exponential and Logarithmic Functions
overview of investment problems using interest compounded a certain number of times per year
• #### Adding and Subtracting - Problem 1

##### Math›Pre-Algebra›Whole Numbers
Practice using the number line as a way to represent adding and subtracting whole numbers
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• #### Dividing Complex Numbers - Problem 3

How to divide by an imaginary monomial.
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• #### Introduction to Imaginary Numbers - Problem 4

How to graph in the complex plane.
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• #### The Euler Formula - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to derive our method for multiplying complex numbers and DeMoivre's Theorem using Euler's Formula.
• #### Compound Interest (Finite Number of Calculations) - Problem 7

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
overview of investment problems using interest compounded a certain number of times per year
• #### Multiplying Complex Numbers - Problem 3

How to multiply imaginary monomials.
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• #### Multiplying Complex Numbers - Problem 4

How to multiply complex binomials.
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• #### Dividing Complex Numbers - Problem 4

How to simplify radical quotients with a negative root in the denominator.
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• #### DeMoivre's Theorem - Problem 1

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to simplify integer powers of a complex number by converting to trigonometric form.
• #### DeMoivre's Theorem - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to raise a complex number to an integer power using DeMoivre's Theorem.
• #### DeMoivre's Theorem - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to compute several integer powers of a complex number, z = 1 + i, by converting to trigonometric form.
• #### The Euler Formula - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use the Euler Formula to convert a complex number from the exponential form to rectangular form.
• #### The Number e and the Natural Logarithm - Problem 3

##### Math›Precalculus›Exponential and Logarithmic Functions
How to change any exponential function to base e.