log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)
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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
log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)
log(4)25-2log(4)10+log(4)5*log(5)16
log(75)10-log(3)10+log(4)10
log
log
log
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