(0.1x-0.2)/0.02+(x+1)/0.5=3 求x
(0.1x-0.2)/0.02+(x+1)/0.5=3 求x
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
0.04分之0.1X-0.3-X=0.4乘以(0.5X-3)求X
5x-3(2x+1)=6x-4(5-3x)求x
(1) f(x)=X²+3x 求(X+1)与f[f(x)]
(x)-2x·x-x-2x+1=0求x的值,
搞不懂x^-3x+1=0求 (1)x+1/x(2)x^+1/x^
1)x+1/x=3,求x^10+x^5+1/x^5+1/x^10的值
f(x-1)=x平方-2x+3x(X小于等于0)求f(x)的反函数
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
已知(x-根号2+1)(x-3)=0,求代数式{[(x-1)/(x-3)]-[(x-4)/x]}/[(x的平方+x-6)