Negating a Conditional Statement

Learning Objectives: Take the negation of a conditional not by using truth tables, but by using known logical equivalences.

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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

[katiecatalano]

Wow I'm taking discrete math online. his explanations are INVALUABLE!! really explains things well and making people successful at understanding abstract concepts by breaking them down. Phenomenal teacher.

[jamestownsley]

THANK YOU! the FIRST HALF DECENT VIDEO THAT I COME ACROSS THAT IS REMOTELY HELPING WITH MINE LOGIC EQUATION LOGICAL EQUIVALENCE PROBLEMS! you are ACTUALLY EXPLAINING STUFF RATHER THAN JUST DOING LAZY DEMO!

[ashrule]

thank you so much for these videos! I'm in discrete math and our prof doesn't make any sense. a lot of my classmates are using your videos! I just saw you also did linear algebra which I'm also taking. you're going to save my grades!!

[craftigo]

🙏Thank you so much it's really helpful ❤️lots of love from India 🇮🇳

[erikkhan]

This video just cleared all of my doubts about implications. thnks

[peng]

wait how did the conditional change operation?

[ashishsarker]

Thanks to you now I know that was primarily De Morgans Law

[dalya.mohammed]

Thank you so much you are the best best Teacher 💐💐💐

[clemkadiddlehopper]

1:27 Either it is possible that approximately 27, 000 middle fingers did shoot into the air and/or did shoot at the screen or it is not possible that 27, 000 middle fingers did not shoot into the air and/or did not shoot at the screen.

[d_]

Is p -> ~q the same as ~(p -> q)

[Starkeweg]

1- how is ur so voice clear behind glass.

2 - since facing the opposite way and I can perfectly read what u write it means that u must be writing English from ur right side. Which would be mad if ur doing that.

3 - please explain 🤣

[HMN]

What if the negation was there exists a triangle with a figure of 4 sides. Eventhough in reality that can’t be true?

[danielle]

Are you writing backwards?? Or is the video flipped? 🤔

[saadafm]

I completely understand this. But how would I go about solving
p -> ~q

the answer in my textbook states that it is ~p v ~q but I'm not sure how to exactly PROVE this...

[tyrro]

Why couldn’t you just make it ~q -> ~p?

[SIVAN]

Write down the negation of the statement (p-->q) v (q-->p)
please I need the ans for this sum

[Wildwildmint]

I feel like I know what you're saying, but it's way too abstract that my brain goes blank...