熱心網(wǎng)友

log5+log5+log4=log(5*5*4)=log100=2you see? *a

熱心網(wǎng)友

log5+log5+log4=log(5*5*4)=log100=2所以log4=2-2*a

熱心網(wǎng)友

lg4=2lg2=2(1-lg5)=2(1-a)=2-2a.

熱心網(wǎng)友

log5+log4=log(5*5*4)=log100=2 =log4=2-2a

熱心網(wǎng)友

2-2a