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### Complex numbers : Dividing Complex Numbers

##### By: Sal Khan, Monterey Institute for Technology and Education

Dividing Complex Numbers

Understanding i and the complex plane

### Complex numbers : Complex Numbers

##### By: Sal Khan, Monterey Institute for Technology and Education

Complex Numbers

Understanding i and the complex plane

### Complex numbers : Subtracting Complex Numbers

##### By: Sal Khan, Monterey Institute for Technology and Education

Subtracting Complex Numbers

Understanding i and the complex plane

### Complex numbers : Complex Numbers (part 2)

##### By: Sal Khan

Dividing complex numbers. Complex conjugates.

Understanding i and the complex plane

### Complex numbers : Adding Complex Numbers

##### By: Sal Khan, Monterey Institute for Technology and Education

Understanding i and the complex plane

### Complex numbers : Multiplying Complex Numbers

##### By: Sal Khan, Monterey Institute for Technology and Education

Multiplying Complex Numbers

Understanding i and the complex plane

### Complex numbers : Complex Conjugates Example

##### By: Sal Khan, Monterey Institute for Technology and Education

Complex Conjugates

Understanding i and the complex plane

### Brain Teasers : Forehead Numbers Brain Teaser

##### By: Sal Khan

The perfect logicians are at it again.

Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!

### The imaginary unit i : i as the Principal Root of -1 (a little tec...

##### By: Sal Khan

i as the principal square root of -1

Understanding i and the complex plane

### The imaginary unit i : Introduction to i and Imaginary Numbers

##### By: Sal Khan

Introduction to i and imaginary numbers

Understanding i and the complex plane

### Challenging complex number problems : IIT JEE Complex Numbers (part 2)

##### By: Sal Khan

2010 IIT JEE Paper 1 Problem 39 Complex Numbers (part 2)

Understanding i and the complex plane

### Brain Teasers : 3-D Path Counting Brain Teaser

##### By: Sal Khan

Extending the path counting to three dimensions

Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!

### Challenging complex number problems : IIT JEE Complex Numbers (part 1)

##### By: Sal Khan

2010 IIT JEE Paper 1 Problem 39 Complex Numbers (part 1)

Understanding i and the complex plane

### Intro to complex analysis : Complex Conjugates

##### By: Sal Khan

Complex Conjugates

Understanding i and the complex plane

### Challenging complex number problems : IIT JEE Complex Numbers (part 3)

##### By: Sal Khan

2010 IIT JEE Paper 1 Problem 39 Complex Numbers (part 3)

Understanding i and the complex plane

### Brain Teasers : Path Counting Brain Teaser

##### By: Sal Khan

Counting paths in a square

Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!

### Intro to complex analysis : Exponential form to find complex roots

##### By: Sal Khan

Using exponential form to find complex roots

Understanding i and the complex plane

### The imaginary unit i : Calculating i Raised to Arbitrary Exponents

##### By: Sal Khan

Calculating i raised to arbitrarily high exponents

Understanding i and the complex plane

### Brain Teasers : Toggler Brain Teaser

##### By: Sal Khan

Separating the truthteller from the togglers!

Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!

### Brain Teasers : Blue Forehead Room Solution

##### By: Sal Khan

Do not watch before Blue Forehead Room. THIS IS THE SOLUTION!

Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!

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