1. Algebraic methods
Videos:
Proof by contradiction - example 1. Here, we prove that there is no greatest odd integer.
2. Proof by contradiction - example 2. Here, we prove that if n^2 is even, then n must be even.
Videos:
Proof by contradiction - example 1. Here, we prove that there is no greatest odd integer.
2. Proof by contradiction - example 2. Here, we prove that if n^2 is even, then n must be even.