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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

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Challenging complex number problems : Complex Determinant Example

By: Sal Khan

2010 IIT JEE Paper 1 Problem 53 Complex Determinant

Understanding i and the complex plane

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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

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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

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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!

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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!

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Complex numbers : Complex Numbers (part 2)

By: Sal Khan

Dividing complex numbers. Complex conjugates.

Understanding i and the complex plane

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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

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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!

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Brain Teasers : Alien Abduction Brain Teaser

By: Sal Khan

Saving Earth from becoming a mushroom farm.

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

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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

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Brain Teasers : Liar Truth-teller Brain Teaser

By: Sal Khan

How to get correct advice when you can only ask one question from either a liar or a truth-teller (when you don't know who is what)

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

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Intro to complex analysis : Basic Complex Analysis

By: Sal Khan

Argand Diagram, magnitude, modulus, argument, exponential form

Understanding i and the complex plane

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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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Complex numbers : Complex Numbers (part 1)

By: Sal Khan

Introduction to complex numbers. Adding, subtracting and multiplying complex numbers.

Understanding i and the complex plane

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Brain Teasers : Blue Forehead Room Brain Teaser

By: Sal Khan

What happens when 100 perfect logicians have to figure out if they each have a blue forehead?

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

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Brain Teasers : Light Bulb Switching Brain Teaser

By: Sal Khan

Turning light bulbs on and off.

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

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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

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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

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Complex numbers : Subtracting Complex Numbers

By: Sal Khan, Monterey Institute for Technology and Education

Subtracting Complex Numbers

Understanding i and the complex plane

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