1/4,-3/4,-3/4,1/4,17/4,( )
1/4,-3/4,-3/4,1/4,17/4,( )
【17/12-(3/4-1/6)】除以3/4
4 4 4 4 4=0 4 4 4 4 4=1 4 4 4 4 4=2 4 4 4 4 4=3 4 4 4 4 4=4
4 4 4 4=1 4 4 4 4=2 4 4 4 4=3 填标点符号
-1/3,4/11,4/17,32/57,( )
((1^4+1/4)(3^4+1/4)(5^4+1/4).(19^4+1/4))/((2^4+1/4)(4^4+1/4)
(1^4/4)(3^4+1/4)...(19^4+1\4) \ (2^4+1/4)(2^4+1/4)(4^4+1/4).
75%x+3/4X=17 3.6:1 4/5X=1 3/4
1/3,2/3,1/3,1/4,2/4,3/4,2/4,1/4,( ),( ),( ),( ),( ),( ),( )
(1^4+1/4)*(3^4+1/4)*.(19^4+1/4)/(2^4+1/4)*(4^4+1/4).(20^4+1/
求[(1^4+1/4)(3^4+1/4)(5^4+1/4)……(19^4+1/4)]/[(2^4+1/4)(4^4+1/
1/1*2*3*4+1/2*3*4*5+1/3*4*5*6.+1/17*18*19*20