1x2x3+2x3x4+3x4x5……+10x11x12巧算 请在两天之内回答
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1x2x3+2x3x4+3x4x5……+10x11x12巧算请在两天之内回答1x2x3+2x3x4+3x4x5……+10x11x12巧算请在两天之内回答1x2x3+2x3x4+3x4x5……+10x1
1x2x3+2x3x4+3x4x5……+10x11x12巧算 请在两天之内回答
1x2x3+2x3x4+3x4x5……+10x11x12巧算 请在两天之内回答
1x2x3+2x3x4+3x4x5……+10x11x12巧算 请在两天之内回答
c语言
main()
{int a,b,c,max,sum;
sum=0;a=1;b=2;c=3;
scanf("%d",&max);
for(;max
1x2x3+2x3x4+3x4x5+…+8x9x10
1x2X3+2x3X4+3x4X5+…+7X8X9=?
1x2x3+2x3x4+3x4x5……+10x11x12巧算 请在两天之内回答
1/1x2x3+1/2x3x4+1/3x4x51/2x3x4 + 1/3x4x5 + 1/4x5x6 +……+1/99x100x101是 1/(2x3x4)
1x2x3+2x3x4+3x4x5+.+10x11x12
1x2x3+2x3x4+3x4x5+...+7x8x9=,
1x2x3 2x3x4 3x4x5 .10x11x12,怎么算
求和:1X2X3+2X3X4+3X4X5+...+98X99X100
数学简便计算1/1x2x3+1/2x3x4+1/3x4x5……+1/20x21x22=?
1x2x3十2x3x4十3x4x5十…十7x8x9试着写出过程!
1x2=1|3(1x2x3-0x1x2) 2x3=1|3(2x3x4-1x2x3) 3x4=1|3(3x4x5-2x3x4)由此推断1x2x3+2x3x4+3x4x5.7x8x9=?
1x2=1/3x(1x2x3-0x1x2)2x3=1/3x(2x3x4-1x2x3)3x4=1/3x(3x4x5-2x3x4)求1x2x3+2x3x4+3x4x5+...+7x8x9=?
计算(要写出计算过程):1x2x3+2x3x4+3x4x5+…+7x8x9好的答案加200分采纳
1/1x2x3+1/2x3x4+1/3x4x5+.+1/n(n+1)(n+2)
2/1x2x3+2/2x3x4+2/3x4x5+2/4x5x6+...+2/98x99x100=
1/1x2x3+1/2x3x4+1/3x4x5+.+1/8x9x10 求简算
请1/1x2x3+1/2x3x4+1/3x4x5+1/4x5x6=
1/1x2x3+1/2x3x4+1/3x4x5+------+1/98x99x100=