Reducio Ad Absurdum (Proof by Contradiction)

Hello there! You may have seen my previous video where I proved to you that the squareroot of 2 is irrational. That is one of the most classic and famous examples of proof by contradiction. If you haven't seen that video, you can watch it here:    • Proof by Contradiction: Sqrt(2) is Irrational  

The title of this video is Reducio Ad Absurdum. Doesn't it sound like some Harry Potter thing. Reducio Ad Absurdum is latin to mean reducing to the absurd. What does that mean? You'll see other names that it may go by which are Proof by Contradiction or Good Faith Proof. In this video, I talk about what proof by contradiction is and the steps on using this method of proof. The next section, I provide a few different examples of how to use this method of proof.

Sections of this video:
0:00 Introduction to Reducio Ad Absurdum or Proof by Contradiction
5:18 Practice Problem #1
9:46 Practice Problem #2
13:48 Practice Problem #3

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