7.3 Rules of Replacement I

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  • Опубліковано 9 лют 2025

КОМЕНТАРІ • 31

  • @brianho6625
    @brianho6625 10 років тому +22

    Thorsby is the life safer for lazy students who fell in sleep in class, but still deserves a pass in logic test! Thank you so much!!!!

  • @doskido4418
    @doskido4418 10 років тому +9

    I did fine with everything in the book up until chapter 7! The professor just wasn't making since when explaining the rules. I understood how the rules worked, but had trouble keeping them in my head. This video is AWESOME

  • @NishadSD
    @NishadSD 11 років тому +7

    You are honestly just as great a teacher as my prof. Whenever I miss my classes, I will watch your lectures to catch up. I have used them all night to help study for an exam and I have 100% confidence that I will get an A~!

  • @marooqi
    @marooqi 2 роки тому +1

    @33:25, is it j instead of L? line 1 only has a j

  • @RickAbbott88
    @RickAbbott88 11 років тому

    Thank you, Mark, for putting in the time and effort for these videos! It really helps me supplement my in-class lectures

  • @shrubbylubes
    @shrubbylubes 6 років тому

    my prof is awful at explaining things to the point where showing up to lecture just confuses me even more!! these videos really help, thank you!

  • @j-dope6536
    @j-dope6536 3 роки тому

    27:00 Thank you so much for this. Very informative!

  • @carterleonidas7757
    @carterleonidas7757 11 років тому +5

    shouldn't it be G&(HvJ) not G&(HvL)?

  • @cdawwg2
    @cdawwg2 11 років тому

    I understand your lectures so much more better than reading from the book

  • @digimoncrazy
    @digimoncrazy 9 років тому +6

    In the problem at 31:11, you made a critical error; there is no L on the first line. Then, on line 3, you perform the whole problem assuming a letter exists where it doesn't. Can you explain the correct proof?

    • @TXSagira
      @TXSagira 8 років тому

      It was definitely a big mistake, but it didn't really matter in the end since he simplified that line.

  • @nanditamenon8997
    @nanditamenon8997 6 років тому +1

    in the sum 30:55 min .. is commutation important? I think we can skip that step and directly go to the answer that is through disjunctive syllogism

  • @adelusibosede6504
    @adelusibosede6504 Рік тому

    Very good work

  • @milana6836
    @milana6836 7 років тому

    thank you!! I now have slightly more confidence in doing my exam!

  • @Strawberrycow22222
    @Strawberrycow22222 11 років тому

    So helpful! Thanks so much for making these videos

  • @BWVidventures
    @BWVidventures 4 роки тому

    thank you very much! 💯👍 i think i could pass the midterm exam about this on wednesday!

  • @MrWayne-zs3gs
    @MrWayne-zs3gs 7 років тому

    You are currently saving my life, so thank you. lol

  • @cdawwg2
    @cdawwg2 11 років тому

    Your a really great teacher!

  • @Inquiry20
    @Inquiry20 10 років тому +1

    Your vids are AWESOME, Learning so much! However, how would I go to prove this one? It doesn't seem to be quite like the others. I get it when you show me the steps often before you actually say all of them. But this one doesn't seem to follow the rules you gave us. The contradiction is confusing me how it can even be valid. Can you give me a hint?
    1. ~p => q
    2. ~p => ~q
    3.
    ____________
    p
    Can you go over it with an explanation, I've tried like the above problems and can't figure out how to do this one. I don't see which two to use out of the 10 you've shown. Anybody? :(

  • @methlady23
    @methlady23 10 років тому +3

    Does anyone know if the rule of association can be used if there's both a conjunct and disjunct in one premise? This is what I'm looking at:
    9. ~J • (K v M)
    10. (~J • K) v M
    Can I do this move??? If I can then I can work my way to the conclusion, but if not then I'm back at square one. HALP.

    • @paosi26
      @paosi26 10 років тому +1

      The move isn't valid. Association only applies to premises with only all conjuncts or only all disjuncts.

    • @methlady23
      @methlady23 10 років тому

      ahh, thank you!

  • @Nidomy
    @Nidomy 9 років тому

    Is there another rule similar to the Constructive Dilemna, but using Modus Tollens?
    Like this:
    (P THEN Q) AND (R THEN S)
    NON Q OR NON S
    THEREFORE NON P OR NON R
    Is there a name for it?

    • @penssuck6453
      @penssuck6453 9 років тому +1

      +Nidomy
      That looks like "Destructive Dilemma"

    • @Nidomy
      @Nidomy 9 років тому

      Ho, that's the name. Thanks.

  • @Zen-lz1hc
    @Zen-lz1hc 3 роки тому

    Like