2∧log2 1/4+(16/9)∧-1/3+lg20-lg2
问题描述：
2∧log2 1/4+(16/9)∧-1/3+lg20-lg2
答
2∧log2 1/4+(16/9)∧-1/2+lg20-lg2 那儿不是^1/3而是1/2
=1/4 +(9/16)^(1/2)+lg(20÷2)
=1/4+3/4+lg10
=1+1
=2