(1-2)×﹙2-3﹚×﹙3-4﹚×﹙4-5﹚×…×﹙2008-2009﹚×﹙2009-2010﹚=?
2个回答
(1-2)×﹙2-3﹚×﹙3-4﹚×﹙4-5﹚×…×﹙2008-2009﹚×﹙2009-2010﹚
=-1x(-1)x(-1)x(-1)x…x(-1)x(-1)
=-1
相关问题
计算1×1!+2×2!+3×3!+4×4!+…2008×2008!+2009×2009!
1/1×3+1/2×4+…1/2008×2010+1/2009×2011的结果
x/1×2+x/2×3+x/3×4+k+x/2009×2010=2009
(2009×2010-1)/(2009+2008×2010)+(2010×2011-1)/(2010+2009×2011
2010+2009×2011/2010×2011-1—2009+2008×2010/2009×2010-1
解方程[x/1×2+x2×3+x3×4+…+x2009×2010=2009
解方程[x/1×2+x2×3+x3×4+…+x2009×2010=2009
解方程[x/1×2+x2×3+x3×4+…+x2009×2010=2009
解方程[x/1×2+x2×3+x3×4+…+x2009×2010=2009
解方程[x/1×2+x2×3+x3×4+…+x2009×2010=2009