1/2+(1/4+3/4)+(1/6+3/6+5/6)+……+(1/100+3/100+5/100+……+99/100)=希望有过程.如果实在没有过程也没关系,因为是填空题、
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![1/2+(1/4+3/4)+(1/6+3/6+5/6)+……+(1/100+3/100+5/100+……+99/100)=希望有过程.如果实在没有过程也没关系,因为是填空题、](/uploads/image/z/165471-15-1.jpg?t=1%2F2%2B%281%2F4%2B3%2F4%29%2B%281%2F6%2B3%2F6%2B5%2F6%29%2B%E2%80%A6%E2%80%A6%2B%281%2F100%2B3%2F100%2B5%2F100%2B%E2%80%A6%E2%80%A6%2B99%2F100%29%3D%E5%B8%8C%E6%9C%9B%E6%9C%89%E8%BF%87%E7%A8%8B.%E5%A6%82%E6%9E%9C%E5%AE%9E%E5%9C%A8%E6%B2%A1%E6%9C%89%E8%BF%87%E7%A8%8B%E4%B9%9F%E6%B2%A1%E5%85%B3%E7%B3%BB%2C%E5%9B%A0%E4%B8%BA%E6%98%AF%E5%A1%AB%E7%A9%BA%E9%A2%98%E3%80%81)
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1/2+(1/4+3/4)+(1/6+3/6+5/6)+……+(1/100+3/100+5/100+……+99/100)=希望有过程.如果实在没有过程也没关系,因为是填空题、
1/2+(1/4+3/4)+(1/6+3/6+5/6)+……+(1/100+3/100+5/100+……+99/100)=
希望有过程.
如果实在没有过程也没关系,因为是填空题、
1/2+(1/4+3/4)+(1/6+3/6+5/6)+……+(1/100+3/100+5/100+……+99/100)=希望有过程.如果实在没有过程也没关系,因为是填空题、
1/2=1/2;
1/4+3/4=(2²)/(2×2)=2/2;
1/6+3/6+5/6=9/6=(3²)/[2×3]=3/2;
1/8+3/8+5/8+7/8=16/8=(4²)/[2×4]=4/2;
1/10+3/10+5/10+7/10+9/10=25/10=(5²)/[2×5]=5/2;
1/12+3/12+5/12+7/12+9/12+11/12=36/12=(6²)/[2×6]=6/6;
1/14+3/14+5/14+7/14+9/13+11/14+13/14=47/14=(7²)/[2×7]=7/2;
1/16+3/16+5/16+7/16+9/16+11/16+13/16+15/16=64/16=(8²)/[2×8]=8/2;
……
这样你可明白?答案:1275/2.
1、2、2、4、3、6、4、( )、(
1+2+3/6+1/4=
简算:1/1*2+1/2*3+1/3*4+1/4*5+1/5*6
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),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),
1+1 1+3 6-3 4-2
[2^4+1/4)(4^4+1/4)(6^4+1/4)(8^4+1/4)(10^4+1/4)】/[1^4+1/4)(3^4+1/4)(5^4+1/4)(7^4+1/4)(9^4+1/4)]
巧算:(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5)(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5)=====
简算:24×(1/2+1/3-1/4-1/6)
(1/2+1/3+1/4+1/6)*24
1/1*3+1/2*4+1/3*5+1/4*6+.+1/100*102=?
2/1:3/1:4/1:6/1怎么得出等于6:4:3:2
1/1*2*3+1/2*3*4+1/3*4*5+1/4*5*6---------+1/48*49*50
1,2,2,3,4,6,( )
(6)2(1)(2)(3)(4)
(-2/3)+(-1/6)+1/4-1/2
习题2.8 -2/3+(-1/6)-(-1/4)-1/2