6.3➗x=1.8.15➕8x=79 5x-37.2=1.9.
解方程 6.3➗x=1.8 15➕8x=79 5x-37.2=1.8
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x+x=x+15
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
(X+X)+(X-X)+(X*X)+(X/X)=100
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
X-5+8*X=7*X-2*X-1
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),