log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/07/05 13:42:02
log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log

log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)
log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)

log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)
log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)
=log(10)(25/9÷7/4÷1/9×7)
=log(10)100
=2