dx X one dx a zero dx plus ALPHA BETA plus dx ALPHA dx BETA dx times ALPHA BETA plus times BETA dx ALPHA times ALPHA dx BETA dx minus ALPHA BETA minus dx ALPHA dx BETA dx neg ALPHA neg dx ALPHA dx div ALPHA BETA minus div dx ALPHA BETA times ALPHA div dx BETA exp BETA two dx ln ALPHA div dx ALPHA ALPHA dx exp ALPHA BETA plus times BETA times exp ALPHA minus BETA one dx ALPHA times exp ALPHA BETA times ln ALPHA dx BETA 2.2 dx exp ALPHA BETA dx ALPHA dx minus ALPHA BETA dx ALPHA dx plus ALPHA BETA dx BETA dx times ALPHA BETA dx ALPHA dx times ALPHA BETA dx BETA dx minus ALPHA BETA dx BETA dx ln ALPHA dx ALPHA dx div ALPHA BETA dx BETA dx exp ALPHA BETA dx BETA dx neg ALPHA dx ALPHA dx plus ALPHA BETA dx ALPHA dx div ALPHA BETA dx ALPHA true dx div ALPHA BETA dx ALPHA dx times ALPHA BETA dx BETA dx plus ALPHA BETA dx ALPHA dx neg ALPHA dx ALPHA dx exp ALPHA BETA dx BETA dx times ALPHA BETA dx ALPHA dx plus ALPHA BETA dx BETA dx minus ALPHA BETA dx ALPHA dx div ALPHA BETA dx BETA dx ln ALPHA dx ALPHA dx minus ALPHA BETA dx BETA dx exp ALPHA BETA dx ALPHA true zero 0 0 a 0 0 ln 1 1 1 minus 2 1 2 1 dx 1 1 0 div 2 1 2 1 two 0 0 dx 1 0 one 0 0 times 2 1 2 1 neg 1 1 1 plus 2 1 2 1 exp 2 1 2 1 NaTT certifiable-1.6