I can't thank you enough, Mr. Fruhling, for the relief this video brought me. Sometimes it's easy to miss how ecstatic students feel when they understand a concept! Every lesson that builds up to mastery of a subject is essential. I deeply appreciate the way you stay friendly and thoughtful when you teach. I'll try to hold on to that as I begin student teaching.
@elitea6070
2 жыл бұрын
I was stuck on this for 3 weeks, but thanks to you going over everything step by step, I finally understood how natural deduction works. You absolute mad lad 🙏 P.s This is for computer science at uni
@garyhughes1664
3 жыл бұрын
This is by far the best channel I've come across to teach the student introductory logic. Thx.
@zfruhling
3 жыл бұрын
Thank you, Gary! I've been privileged to make a real difference in logic education, both through my work at Aplia creating educational materials for logic and in my own content creation and classroom teaching work. I try to make sure that even my free content is better than most companies' paid content! I hope you'll visit my website, if you haven't already done so. There's a ton of philosophy content on there to explore. www.zacharyfruhling.com - Thanks again, Gary, and don't hesitate to reach out if you have any questions on logic in particular or philosophy in general!
@bigbro_songz
7 ай бұрын
I fully agree. Straight to the point.
@dennycochran5323
Жыл бұрын
The day we did "Natural Deduction/Rules of Implication I", I walked out of Logic class truly lost. After this video I'm cranking out the answers like a boss, and I completely understand it! :-D
@zfruhling
Жыл бұрын
Hi Denny! I’m so glad that this video helped. Be sure to check out the other videos in the series as your logic class goes on. And don’t be afraid to drop me a line if I can be helpful.
@nudzisz
10 ай бұрын
So clear and complete explanations, thank you a lot
@mastermind2971
2 жыл бұрын
Thank you Zach!!! May God bless you!
@zfruhling
2 жыл бұрын
You're very welcome! I hope these logic videos are helpful! 🙂
@wendelmaglinte9749
3 жыл бұрын
I hope u r my logic teacher. My instructor just hand out modules then that's it.
@AbigealChepkurui
14 күн бұрын
Hi! For number 5, I took a different route to get to the conclusion P. 4. 1,3 MP 5. 2,4 MP 6. 3,5 MP 7. 4,6MP Does this add up or am I wrong?
@reignkylaortega2983
2 жыл бұрын
Thankk youu very much!!! I thought this was really scary but you made it so simpleee and easy to understand. At first I was really just noting every example but at the near end, I try to answer it on my own first before I continue the video to see if I was correct. And I am!! Thank youu very much, really.
@zfruhling
2 жыл бұрын
I'm so glad that this was helpful! Be sure to check out other videos in this natural deduction series, especially if you get stuck at any point and you work through your course. Let me know if you have any questions!
@henrywebster9529
Ай бұрын
Dear sir, could you let me know which textbook you are using.
@zfruhling
Ай бұрын
This course used "A Concise Introduction to Logic" by Hurley/Watson: amzn.to/3AK02ad
@henrywebster9529
Ай бұрын
@@zfruhling Thank you so much. I will get the book and follow your, truly excellent tutorials/lectures.
@juliannefuerte9947
Жыл бұрын
You're a LIFE SAVER thank you so much
@zfruhling
Жыл бұрын
I’m so glad this was helpful! Be sure to check out my other videos on subsequent chapters and assignments, and don’t hesitate to contact me with any questions!
@begumka999
2 жыл бұрын
omg this is actually FUN! thank you
@zfruhling
2 жыл бұрын
I’m so glad you found the video helpful!
@dimuthuranasinghe1713
2 жыл бұрын
Thank you so much for this !
@reda9824
2 жыл бұрын
thanks that was so helpful :)
@wendelmaglinte9749
3 жыл бұрын
1. B v ~k 2.~k is that deductible? What will be the result if it is.?
@zfruhling
3 жыл бұрын
No, if you have B v ~K and you also have ~K, you can't conclude anything from that. (That's not entirely true, actually. You could use the Addition rule to conclude something like (B v ~K) v A, or something like ~K v A. But you know nothing about the truth or falsity of B from the fact that K is false (i.e., ~K is true).
@wendelmaglinte9749
3 жыл бұрын
Hi sir. Im really confused with this one. I've been trying to solve this one but i can't find the correct answer. 1. (B v N) -> (K^L) 2. ~K 3. ~M /~B^~M i hope you'll take your time to answer this one.
@zfruhling
3 жыл бұрын
@@wendelmaglinte9749 Get ~K v ~L by addition. Then use De Morgan's Rule to get ~(K ^ L). Then get ~(B v N) by Modus Tollens. Then get ~B ^ ~N by De Morgan's Rule. Then get ~B by simplification. Finally, get ~B ^ ~M by conjunction. I hope that helps!
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