99÷(99+1)÷(99+2)x(99+3)÷(99+4)÷(99+5)x(99+6)÷……÷(99+101)
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99÷(99+1)÷(99+2)x(99+3)÷(99+4)÷(99+5)x(99+6)÷……÷(99+101)
99÷(99+1)÷(99+2)x(99+3)÷(99+4)÷(99+5)x(99+6)÷……÷(99+101)
99÷(99+1)÷(99+2)x(99+3)÷(99+4)÷(99+5)x(99+6)÷……÷(99+101)
99÷(99+1)÷(99+2)×(99-3)÷(99+4)÷(99+5)×(99-6)÷...÷(99+101)
=[99×(99-3)×(99-6).×(99-99) ] / [(99+1)×(99+2)×(99+4)×(99+5).×(99+100)×
(99+101)]
=0
0
99÷(99+1)÷(99+2)×(99-3)÷(99+4)÷(99+5)×(99-6)÷...÷(99+101)
=[99×(99-3)×(99-6)......×(99-99) ] / [(99+1)×(99+2)×(99+4)×(99+5)..........×(99+100)×
(99+101)]
=0
根据规律其中有一项为x(99-99)。所以=0
x(x-1)(x-2)...(x-99)(x-100)
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
(1+x)+x(1+x)+x(1+x)^2+……+x(1+x)^99
1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3).+1/(X+99)(X+100)=
计算1/X(X+1)+1/(X+1)(X+2)+.+1/(X+99)(X+100)
f(x)=x(x-1)(x-2)…(x-99)(x-100),求f'(100)
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
1X+2X+3X…+98X+99X+100X=50500X X等于多少?
1x+2x+3x+4x+5x+6x+7x…+99x=100
已知x^4+x^3+x^3+x^2+x^1+1=0,求x^100+x^99+x^98+x^97+x^96的值
一道数学题:1/x-1+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(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/(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)……+1/(x+99)(x+100)
x^3+x^2+x+1=0,则x^97+x^98+x^99+.x^103=
(1-x)(1+x+xˇ2+...+xˇ98+xˇ99)
请问1+x+2x+3x…99x+100x等于多少.
请问1+x+2x+3x…99x+100x等于多少.
1+x+x^2+x^3+.+x^99+x^100同上,怎么算?求解!