∵log(a)(m/n)=log(a)(m)-log(a)(n)∴-log a 1/x=-(log a 1-log a x)∵log(a)(1)=0∴-(log a 1-log a x)=log a x明教为您解答,如若满意,请点击[满意答案];如若您有不满意之处,请指出,我一定改正!希望还您一个正确...