해답지에 이렇게 나왓는데.. 2에서 3에서 어떻게 변하는지 이해가 안되네요
log{루트27 + 8 + (1/루트1000)}.....................1
=log{3루트3 + 8 + {1/10루트10)}....................2  
=log{1.2 * 루트1.2)................................3
=3/2log1.2.........................................4
저게 어떻게 가능한거죠?