(1)a^1/2*a^1/3*a^1/4 (2)log³₂·log₃5·log₃2 (3)5^(lg5+lg2-1)(1)a^1/2*a^1/3*a^1/4 (2)log³₂·log₃5·log₃2(3)5^(lg5+lg2-1)

问题描述:

(1)a^1/2*a^1/3*a^1/4 (2)log³₂·log₃5·log₃2 (3)5^(lg5+lg2-1)
(1)a^1/2*a^1/3*a^1/4
(2)log³₂·log₃5·log₃2
(3)5^(lg5+lg2-1)

(1)a^1/2*a^1/3*a^1/4
=a^(1/2+1/3+1/4)
=a^13/12
(2)log³₂·log₃5·log₃2
=lg2/lg3*lg5/lg3*lg2/lg3
=无法计算
(3)5^(lg5+lg2-1)
=5^(1-1)
=5^0
=1