Written hw 2 (due 9/11) problem 1 (2013spring #11): is the following statement a tautology? justify your answer by constructing a truth table. - (p^9) +- qvp). problem 2 (2015fall #5): determine whether the following argument is valid and justify your answer (construct a truth table). : pa-a

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?