Recent content by RUBSTEP

  1. R

    Sentential logic exercise from 'How to Prove it - A Structured Approach'

    Im sorry I've shouldve been more clear. That formula is what i have tried to get to but with no success.
  2. R

    Sentential logic exercise from 'How to Prove it - A Structured Approach'

    Homework Statement This is an exercise from 'How to Prove it - A Structured Approach' (Exercise 7a, page 54) . So far a a really great book. Homework Equations The DeMorgan, Absorption, Idempotent, Double Negation, Commutative, Associative, Distributive, Tautology, Contradiction...
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    High School Which is the correct answer for 48÷2(9+3): 2 or 288?

    A good a reason as any to register to this fine forum. So if the near-consensus is that left-to-right is the correct way to view it. Then can there also be an agreement that (9+3)48/2 is incorrectly calculated by for example wolphramalpha?