anonymous
  • anonymous
If ~q <=> ~p is T and pf is F, find the truth value of q =>p.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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amistre64
  • amistre64
another way to express that <=> part is to split it up both ways: -q -> -p -p -> -q
amistre64
  • amistre64
-q <-> -p is only true if bith those expressions are true
anonymous
  • anonymous
I meant to say *and p is F. Sorry. So will the value be false?

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amistre64
  • amistre64
dunno, id have to remember all the assorted details :)
anonymous
  • anonymous
don't you love truth tables?
amistre64
  • amistre64
p -p q -q -p -> -q -q -> -p -q <-> -p 1 0 1 0 1 1 1 1 0 0 1 1 0 0 0 1 1 0 0 1 0 0 1 0 1 1 1 1 aint that the truth :)
amistre64
  • amistre64
if p is 0 then -p is 1
amistre64
  • amistre64
other than that, im sure I cant undersatnd the rest of the question
anonymous
  • anonymous
we also have \[\lnot p \leftrightarrow \lnot q \equiv p \leftrightarrow q\]
anonymous
  • anonymous
which certainly means if \[\lnot p \leftrightarrow \lnot q \] is true then \[q\rightarrow p\] is true
amistre64
  • amistre64
If ~q <=> ~p is T p -p q -q -p -> -q -q -> -p -q <-> -p 1 0 1 0 1 1 1 0 1 0 1 1 1 1 and p is F, p -p q -q -p -> -q -q -> -p -q <-> -p 0 1 0 1 1 1 1 find the truth value of q =>p. p q -q <-> -p 0 0 1 0 -> 0 = 1
anonymous
  • anonymous
wow! but i still think the question is odd. if p iff q, then q implies p and p implies q, really has nothing to do with a particular case
amistre64
  • amistre64
indeed, its just a practice drill :)
anonymous
  • anonymous
Wow. Thanks for breaking this down. My prof doesn't go this in-depth. Guess he gets bored since he already knows this stuff haha
amistre64
  • amistre64
im in calc 3 and my teacher is still teaching us ow to add and subtract fractions; since there are students in class that have no idea how to .... makes me wonder how they even got there to begin with
amistre64
  • amistre64
then she wonders why she gets behind in the lessons plans :)
anonymous
  • anonymous
do you have to put the fractions over the same denominator? or can you just add straight across?
amistre64
  • amistre64
i just add straight across and hope for the best lol
anonymous
  • anonymous
Remarkable. Talk about breaking away from the syllabus..sheesh

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