200+200*(1+x)+200*(1+x)*(1+x)=1400
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
计算1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+……+1/(x+2007)(x+200
化简:1/X(X+1) +1/(X+1)+(X+2) +1/(X+2)(X+3) +.+1/(X+2006)(X+200
求解几道方程.1/2x-20+1/2【x-(1/2x-20)】+20=x-50 x/(200-400/3)+x/(200
[x(x+1)+x平方(x-1)]+(-3x)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
3/x-1=4/x 6/x+1=x+5/x(x+1)
函数的表示法 f(x+1/x)=x*x+1/(x*x)
(x)-2x·x-x-2x+1=0求x的值,
x-120+200=(1+1/5)x
1/10(200-x)+19=1/3x