Difference between revisions of "1975 AHSME Problems/Problem 7"
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Revision as of 13:26, 15 December 2016
For which non-zero real numbers is a positive integers?
Solution
Solution by e_power_pi_times_i
Notice that if is negative, then the whole thing would amount to a negative number. Also notice that if is positive, then would be , hence the whole thing would amount to . Therefore, is positive .