Practice problem
There is only one pair of integers (a,b)(a,b)(a,b) such that a<ba < ba<b and ab=baa^b = b^aab=ba. What is this pair?
(1,3)(1,3)(1,3)
(−1,1)(-1, 1)(−1,1)
(3,4)(3, 4)(3,4)
(0,1)(0, 1)(0,1)
(2,4)(2,4)(2,4)
Type a concept, like “slope” or “photosynthesis”.