Part 8 Symbolic Logic (Easy proofs using rules of implication)

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Symbolic Logic (easy proofs using rules of implication)
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Thank you so much. My teacher is completely checked out. He basically just handed us the electronic book and checked completely out. No explanations no videos no notes nothing. Doesn’t respond to our homework or tests with notes or help, nothing at all. I’ve been crying all through the semester getting ready to fail for the first time in my life, but I think I might pass thanks to you. Thank you. Truly.

taishanaomi
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Even though I watched this about five years late, you saved my life. Thank you.

cal
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OMG - you are AMAZING!!! I've watched at least 5 videos on how to do this and listened to my professor fly through this information and YOU are the only one that explained it in a way that actually makes sense!!! :) You made my day, Thank you for your help.

Brandon-wotz
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This was a breakthrough for me. My professor is mud. Thanks a lot.

iamdatingurmom
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I have a quiz tomorrow on these and you explained the lesson extremely clear and to the point! Thanks

drsouthpaw
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Glad it helped. :) It's just a matter of practice from this point on

teachphilosophy
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OMG    I LOVE YOU   THIS IS EXPLAINED PERFECTLY YESS

flow_dojo
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In regards to the problem around 10 minutes, can you use a hypothetical syllogism, {if C, then ~D} to {if ~D, then E} and go from there to {if C, then E}? Once you do that, you can get ~C by using {if C then E} and {~E} through modus tollens.

juliancarlson
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thanks so much, really helped me : )

郁子皓
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Regarding the second task: Wouldn't it also suffice to get from P1 and P3 the proof that ~K? Why all the extra steps?

kawaii_hawaii
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I hope both sides of your pillow are cold tonight!

blake
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sir the 9 rules are understand to me but the nineteen rules are did 't sloved to me plizz help me

bikramsaha