PROOF by CONTRADICTION - DISCRETE MATHEMATICS

We take a look at an indirect proof technique, proof by contradiction.

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[squirrelsociety]

I feel like understanding proofs is just memorizing as many examples as possible and hope you see them on the test because there is no way the average student can come up with this on their own.

[djgulston]

I really wish I was this creative. Proofs are never easy for me.

[weldin]

Watching these videos: Yeah, that makes sense!

Going back to my problems from class: Totally lost.

[MobiusChickenStrip]

Usually youtube explanations miss the mark, or aren't as informative as they would like to be. Your video is not one of those. It was very effective in explaining the material, and I feel like I understand it better now. Thank you!

That being said I am NOT ready for my exam tomorrow...

[shayanjavadi]

Hey man, you literally saved my grade in dm. I love the no bs way that you present things and I would definitely be a patron if I wasn't broke as a joke lol.

[AndrewSmithDev]

I've been struggling with proofs but the way you explained it really helped to clarify things

Thanks

[FlashFlash]

Your videos are incredibly helpful and it is very easy to understand what you are saying, thank you.

[maurods]

Thanks, our book on applied formal logic is very confusing (mixed up examples and such) but on your channel I can almost find everything that's in there, but more concisely explained. Thanks a lot!

[hessamesl]

I have been watching your videos on discrete math for 2 months now. You made a challenging course easy to understand and easy to follow. I wish I had seen your videos way before this. so THank you Thank you and Thank you!

[RedQueenAvenged]

I'd like to add a comment about your example with the square root of two. When saying that it is equal to a/b, you have to specify that b != 0, especially if some professors are sticklers for taking off points.

Cheers.

[feldn]

All these videos are very helpful, thank you for sharing!

[dredre]

This class is tough! I appreciate the help

[Keinkrt]

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[mangogoose]

bless you sir, best and most concise videos.Unlike my professor who rambles about random things for an hour. ill donate once my internship starts next week.

[gamzekoyuncu]

When I was in the class, I couldn't understand the proof by contradiction. But now, it's all fine. This video made the subject clear. Thank you!

[KalebMicklatcher]

I learned more in this video than I did our entire week of class, thank you!

[youngdumbandbaroque]

When working with rational (a / b) in any example (where both variables are integers), are you supposed to assume initially that a and b cannot be reduced?

[DaRealSiri]

Test tomrrow, we gonna cook it. LMAO, i am not ready, but you always gotta have the mindset you are going to get 100% am I right

[miguelangelosuna]

Thank you so much, professor, I can finally understand!

[muhammedismail]

What I did for (A - B) intersection (B - A) = empty set:


Assume x is an element (A - B) intersection (B - A) where
therefore x is an element of (A-B) and x is an element of (B-A)
therefore (x is an element A and x is NOT an element of B) and (x is an element B and x is NOT an element of A)
therefore contradiction