计算:1/x(x+1)+1/(x+1)(x+2)+……+1/(x+2007)(x+2008).
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/03 07:43:50
计算:1/x(x+1)+1/(x+1)(x+2)+……+1/(x+2007)(x+2008).计算:1/x(x+1)+1/(x+1)(x+2)+……+1/(x+2007)(x+2008).计算:1/x
计算:1/x(x+1)+1/(x+1)(x+2)+……+1/(x+2007)(x+2008).
计算:1/x(x+1)+1/(x+1)(x+2)+……+1/(x+2007)(x+2008).
计算:1/x(x+1)+1/(x+1)(x+2)+……+1/(x+2007)(x+2008).
原式可等价于1/X-1/(X+1)+1/(X+1)-1/(X+2)+.+1/(X+2007)-1/(X+2008)=1/X-1/(X+2008)=X/(X(X+2008))
原式=1/x-1/(x+1)+1/(x+1)-1/(x+2)+...+1/(x+2007)-1/(x+2008)
=1/x)-1/(x+2008)
1/(X+1)(X+2)=1/(X+1)-1/(X+2)
1/(X+2)(X+3)=1/(X+2)-1/(X+3)
1/(X+2007)(X+2008)=1/(X+2007)-1/(X+2008)
所以原式
=1/(X+1)-1/(X+2)+1/(X+2)-1/(X+3)+……+1/(X+2007)-1/(X+2008)
=1/(X+1)-1/(X+2008)
计算:x(x^2+x-1)-(x^2-x+1)
计算【x-1】【x²+x+1】
计算:x/(1-x)-1/(x-3)
计算:|3-x|+|x-1|(x>5)
计算:(x-1)(x-1)-(x+1)(x+1)
计算1/x(x+1).+1/(x+199)(x+200)
计算x平方+x+1+1-x分之x立方
计算 (x-1/x)/(x+1/x-2)
初二计算:x²/x-1+x/1-x
计算:x²+x+1-(x³)/(x-1)
计算:(3/x)+(x/x²-1)-(4/1-x)
计算:x(x-1)(x+1)(x+2)-24
计算:( x-1)/x÷[x-(1/x)]
Lim(x>1) x-1/x^2+x-2.计算
计算(x+1)(x+2)(x+3)(x+4)
计算:(x+1)(x-2)(x-3)(x-6)
计算 x(x+3)-(x-1)(x-2)
如何计算 (x+1)(x+2)(x+3)(x+4)