“微信扫一扫”进入题库练习及模拟考试
比较下列各组中两个值的大小:
参考答案:\( \because 0>{\mathrm{log}}_{0.2}3>{\mathrm{log}}_{0.2}4\)
\( \therefore \frac{1}{{\mathrm{log}}_{0.2}3}<\frac{1}{{\mathrm{log}}_{0.2}4}\)
即 \( {\mathrm{log}}_{3}0.2<{\mathrm{log}}_{4}0.2\)