Prove this proposition is a tautology: [(p ∨ q) ∧ (p → r) ∧ (q → r)] → . . . You'll need to complete a few actions and gain 15 reputation points before being able to upvote Upvoting indicates when questions and answers are useful What's reputation and how do I get it? Instead, you can save this post to reference later
Understanding the p implies q statement - Mathematics Stack Exchange Think of → → (the material conditional) in symbolic logic as a logical operator—analogous to ÷ ÷ being an arithmetic operator—that outputs a truth value depending on the truth values of its operands P P and Q Q Operators operate according to predefined rules; here, how → → operates is actually defined by its truth table The