1/2-(3/4-3/8), 1/2+1/4-1/6 , 2/3+(1/2+1/4),
1/2-(3/4-3/8), 1/2+1/4-1/6 , 2/3+(1/2+1/4),
1/2-(3/4-3/8),1/2+1/4-1/6 ,2/3+(1/2+1/4),
2(3^2+1)(3^4+1)(3^6+1)(3^8+1)要简算
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/
1/(1*3)+1/(2*4)+1/(3*5)+1/(4*6)+...+1/(8*10)=?
数列找规律!(1)1,2,-3,-4,5,6,-7,-8(2)-1,-1/2,1/3,1/4,-1/5,-1/6,1/7
(1,1,1).(2,4,8)...3Q
计算:8(3^2+1)(3^4+1)(3^8+1)(3^16+1)+1
1/1×2+1/1-1/2:;1/2×4=1/2×(1/2-1/4);1/58×=1/3(×1/5-1/8)
(-3/4)+1/2;
计算:3(2²+1)(2^4+1)(2^8+1)(2^16+1)
(-1/4)+5/6+2/3-1/2