(1/8+1/10)*(10.25-x)+X/15=1
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(1/8+1/10)*(10.25-x)+X/15=1
![(1/8+1/10)*(10.25-x)+X/15=1](/uploads/image/z/10940752-64-2.jpg?t=%281%2F8%2B1%2F10%29%2A%2810.25-x%29%2BX%2F15%3D1)
![](http://img.wesiedu.com/upload/5/00/50056f60e29b393f0367f823851c97ab.jpg)
再问: (1+1/1*3)*(1+1/2*4)*……*(1+1/8*10)
再问: 亲,再给我回一道
再答: 等下
再答: (1+1/1*3)*(1+1/2*4)*...*(1+1/8*10)
=(2 /1*3)(3 /2*4)*...*(9 /8*10)
=2*9/10=9/5
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=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),
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980
1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少
(1/8+1/10)*(10.25-x)+X/15=1
3^x=2^x,求x.5^(x-1)·10^3x=8^x求x
解方程:(2x+5)(4x*x-10x+25)=8x(x*x+1)
X(X的2次方-6X-9)-X(X的2次方-8X-15)+2X(3-X),其中X=1/3. 先化简,再求值
x-8/5x=15 5/1x+10/3x=120 20%x=30