题库网
#921993fd-84b6-419c-a0b3-305bc0148817基础解答题对数与对数函数函数

13.计算: (1)5log_53log311log1127+log82+log485^{\log \_{5}3}-\log _{3}11\cdot \log _{11}27+\log _{8}2+\log _{4}8

13.计算:
(1)5log_53log311log1127+log82+log485^{\log \_{5}3}-\log _{3}11\cdot \log _{11}27+\log _{8}2+\log _{4}8
(2)若3m3m=233^{m}-3^{-m}=2\sqrt{3},求9m+9m9^{m}+9^{-m}的值.