1
Part of 1998 Irish Math Olympiad
Problems(2)
easy inequality
Source: Ireland 1998
7/4/2009
Prove that if x \not\equal{} 0 is a real number, then: x^8\minus{}x^5\minus{}\frac{1}{x}\plus{}\frac{1}{x^4} \ge 0.
inequalitiesintegrationinequalities proposed
find n
Source: Ireland 1998
7/4/2009
Find all positive integers having exactly divisors 1\equal{}d_1
number theory