3^14x(-1/9)^7
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x
(x-1)(x-3)(x-5)(x-7)-9 因式分解
x+3/x+1-x+5/x+3-x+7/x+5+x+9/x+7=0
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
x+2/x+3-x+1/x+2=x+8/x+9-x+7/x+8
X+7/X+1+X+8/X+2-X+9/X+3-X+10/X+4 的解法
方程x+1x+2+x+8x+9=x+2x+3+x+7x+8