1x2x3x4x5.x100=?
2个回答
1x2x3x4x5.xn=n!(叫n的阶乘)
没有什么准确的公式,有近似公式
斯特林公式:
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相关问题
1X1+2X2+3X3+4X4+5X5.+98X98+99X99+100X100=?
1x1-2x2+3x3-4x4+5x5-6x6.-100x100+101x101
1X2X3X4X5.X100=?
1x1一2x2十3x3一4x4十5x5…十99x99一100x100
1 1 1 1 1 ——+——+——+——+```````` —— 2X3 3X4 4X5 5X6 99X100
1/(2X3)+1/(3X4)+1/(4X5)+1/(5X6)+...+1/(100X101)=?
1x1+0x1+2x2+1x2+3x3+2x3+4x4+3x4……99x99+98x99+100x100+99x100
X1+X2+X3+X4+X5……+Xn的方差是S² 平均数是,则X1+100+X2+100+X3+100+X4
1/2X3X4X5+1/3X4X5X6+1/4X5X6X7.1/97X98X99X100=?
[1/1x2]+[1/2x3]+[1/3x4]+[1/4x5]+…+[1/99x100].