lg12分之一+lg12分之lg1.2等于多少?求详细过程,在线等~_数学解答

lg12分之一+lg12分之lg1.2等于多少?求详细过程,在线等~

人气：378 ℃　时间：2020-10-01 11:37:26

解答

lg12分之一+lg12分之lg1.2
=(1+lg1.2)/lg12
=(lg10+lg1.2)/lg12
=lg(10x1.2)/lg12
=lg12/lg12
=1