a^x = b^y = 2001^zxloga = ylogb = zlog20011/x = loga/(zlog2001) 1/y = logb/(zlog2001)1/x + 1/y = logab /(zlog2001) = 1/zlog ab = log2001ab = 20012001 = 3*667a+b = 3+ 667 = 670