Tautologies and Contradictions

Learning Objectives:
1) Tautologies: examples and truth table
2) Contradictions: examples and truth table
3) Use tautologies and contradictions in compound statements.

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YOUR TURN! Learning math requires more than just watching videos, so make sure you reflect, ask questions, and do lots of practice problems!
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This video was created by Dr. Trefor Bazett

[vejza]

In 3 minutes and 40 seconds you explained this better than my high school math teacher could've done in months back in the day. Just speaks volumes of your competency or her incompetency. I needed closure, thank you.

[thirdlinesniper]

always remember: he had to learn how to write backwards for us

thank you for the lesson sir

[dianacampos]

You and the organic chemistry tutor are the BEST

[JJPM]

Just gotta say, that setup you got for your classes/tutorials is amazing. Mayor respects!

[kent]

just realized that he writes inversely

[maximusgarahan]

The "It is what it is" phenomena is thick right now.

[aprilrahee]

I wonder why my professors are here for.
your tutorials are amazing. Thank you

[shakibridoy]

Teaching style is so good, i try to understand & also teacher is so Handsome, , ,

[backoffer]

t - tautology, c - Contradiction
Tautology - always true
Contradiction - always false

[caseylocke]

I got up to around 0:43 when he said "irregardless" and my brain just couldn't take it. Had to leave. Lol

[Alrukitaf]

0:42 “irregardless?” Ain’t no such animal. No sireee

[mirtuzzamitthi]

Please name your videos starting with serial numbers. While studying i wont miss any videosin the middle. I like your videos!!! Thank you!!!

[hamzamalik]

I can't thank you enough for these videos! :)

[MyStrawberryLife]

Thank you sm I couldn’t understand what my professor was teaching me

[Abdushaye]

Thank you so much Dr! now everything is clear😍

[Daniel_Zhu_af]

from natural sciences perspective a dog is a dog but the word 'mammal' refers to a set that includes set of dogs. while mathematics and other human languages tend to define things via hierarchies, in the material world things are collections of simpler things (unless you are an idealist).

[Toonhai]

There should be new cathegories in Nobel prize.
A) Quantum Phisics and phisics of atomic scale
B) Phisics of Space and Time not be confused with spacetime
C) Engineering
That is hard risky choice but hursh shot.

[barbaraedwardsdelsman]

Regardless. Irregardless is not a word. 😊

[saifullahkhalid]

Although I can't understand fully British or American English but it was great explanation nd could be understood❤❤

[justincallan]

This is not what a Tautology is. For example “1 > 0 implies 0 > -1” is always true but not a tautology since if we replace “0 > -1” with “0 > 0” the result is false.