Please help with this question, my English is not that good:
Here is a truth table for the new symbol *
P * Q T F T T T F F T T F T F
Given this truth-table, what ordinary English expression can this new truth-functional connective (*) be used to symbolize?
One other broad question:
Suppose there are two sentences a and b. On every interpretation that a is true, b is false. What can you conclude (if anything) about the following argument? Briefly explain.
~(a -> b)
.:. ~b v a
-> :material conditional
Many thanks for help