百度作业网1/3,2/3,1/3,1/4,2/4,3/4,2/4,1/4,( ),( ),( ),( ),( ),( ),( )
1/3,2/3,1/3,1/4,2/4,3/4,2/4,1/4,( ),( ),( ),( ),( ),( ),( )
“1”“2”“3”“4”
1+2+3×4
1/4+3/4×2/3
2+2+3+4+1
1+1 2+2 3+1 4+4 51+1
2+1+4 3+3+1
（1^4/4)(3^4+1/4)...(19^4+1\4) \ (2^4+1/4)(2^4+1/4)(4^4+1/4).
(-4/3)*(-8+3/2-3/1)
比较大小(4/3)^1/3,2^2/3,(-2/3)^3,(3/4)^1/2
(（1^4+1/4)(3^4+1/4)(5^4+1/4).(19^4+1/4))/((2^4+1/4)(4^4+1/4)
1,2,3,4题选啥?