(-1)x(-1)^2x(-1)^3x.x(-1)^100=
1个回答
1+2+3+4+5+……+100=5050﹙是偶数﹚
∴﹙﹣1﹚×﹙﹣1﹚²×﹙﹣1﹚³×﹙﹣1﹚^4×……×﹙﹣1﹚^1
=﹙﹣1﹚^5050
=1.
相关问题
(1-1/2x2)(1-1/3x3).(1-1/100x100)
计算:1 1 1 1 1 ——+ ——+——+.+————+———— 1x2 2x3 3x4 99x100 100x10
解方程1/(x+1)(x+2)+1/(x+2)(x+3)+...+1/(x+99)(x+100)+1/x+100=199
[1+1.2]+[2+1.2x2]+[3+1.2x3]+.+[99+1.2x99]+[100+1.2x100]=?
1x1+0x1+2x2+1x2+3x3+2x3+4x4+3x4……99x99+98x99+100x100+99x100
1/x(x+1)(x+2)+1/(x+1)(x+2)(x+3).+1/(x+98)(x+99)(x+100)=?
分式:计算1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+...+1/(x-99)(x-100)
[1/1x2]+[1/2x3]+[1/3x4]+[1/4x5]+…+[1/99x100].
[1/1x2]+[1/2x3]+[1/3x4]+[1/4x5]+…+[1/99x100].
[1/1x2]+[1/2x3]+[1/3x4]+[1/4x5]+…+[1/99x100].