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Discrete Math Proofs in 22 Minutes (5 Types, 9 Examples)

TrevTutor

We look at direct proofs, proof by cases, proof by contraposition, proof by contradiction, and mathematical induction, all within 22 ...

Simple Direct Proof Example

mathapptician

A simple direct proof example on the sum of the first n natural numbers (starting from 1).

Proof by Contrapositive | Method & First Example

Dr. Trefor Bazett

Learning objective: prove an implication by showing the contrapositive is true. This video is part of a Discrete Math course taught ...

Proof by Mathematical Induction - How to do a Mathematical Induction Proof ( Example 1 )

Learn Math Tutorials

In this tutorial I show how to do a proof by mathematical induction. Join this channel to get access to perks: ...

Proof by Contradiction | Method & First Example

Dr. Trefor Bazett

Proof by Contradiction is one of the most important proof methods. It is an indirect proof technique that works like this: You want to ...

Writing Proofs | Direct Proof Example

Michael Penn

We prove a statement using the method of direct proof.

Direct Proof Example

randerson112358

Discrete math proofs practice ▻Videos on Proof Strategies: 1) Proof if n^2 is even then n is even: https://youtu.be/ms-dC6i5oMo 2) ...

Direct Proof: Example 1

Discrete Math videos

... this example we're going to try to prove that if n is even then 3 n + 5 is odd. So it's important to start these proofs understanding ...

Set equality proof example 1

David Ramsey

Note that this proof still works even if X and Y are the empty set.

Direct proof Example

Nick Cutuli

Inductive Proof Example 2 - Sum of (2j-1)

The Walton Pi

In this video, we prove by induction that the sum from 1 to n of (2j-1) is equal to n^2.

Induction Proof Example #2

mathalien

another induction proof!

Combinatorial Proof Example (Lecture 13)

EECS 203

Small edit: in the "Story" portion of your combinatorial proof, make sure you explicitly mention the counting/grouping. So in this ...

Induction Inequality Proof Example 1: Σ(k = 1 to n) 1/k² ≤ 2 - 1/n

Eddie Woo

Induction proofs involving sigma notation look intimidating, but they are no more difficult than any of the other proofs that we've ...

Direct proof example

Beth Kelly

This video screencast was created with Doceri on an iPad. Doceri is free in the iTunes app store. Learn more at ...

Proof by Mathematical Induction - How to do a Mathematical Induction Proof ( Example 2 )

Learn Math Tutorials

In this tutorial I show how to do a proof by mathematical induction. Join this channel to get access to perks: ...

Natural Deduction Proof Example | Step-by-Step in 3 Minutes

Let's Get Logical

A short, 3-minute visual walkthrough of a natural deduction proof using core inference rules: simplification, conjunction, disjunctive ...

Boolean Proof Example 7: Using Contradictory Premises and Conditionalization

FREGE: A Logic Course Elaine Rich, Alan Cline

An example of a Boolean logic proof that exploits two important inference rules: Conditionalization and Contradictory Premises.

Axiomatic proof example 1

David Ramsey

Quiz 2.07 Algebraic Proof Example 1 and 2

Leslie Clark

Recorded with https://screencast-o-matic.com.