以二为底三的对数?以二为底五的对数?
问题描述:
以二为底三的对数?以二为底五的对数?
答
1)\Log23
=lg3/lg2
=0.477/0.301
=1.585
2) log25
=Lg5/lg2
=(1-lg2)/lg2
=0.69897/0.301
=2.322