3 ms·
(x,2x,4x) does not actually give a "yes" every time. In particular, it won't work if x is negative. But, in that case, (4x,2x,x) will work.
by nilkn 11y ago
(x,2x,4x) does not actually give a "yes" every time. In particular, it won't work if x is negative. But, in that case, (4x,2x,x) will work.