1/1*2x+1/2*3x+1/3*4x+1/4*5x+1/6*7x+1/7*8x+1/8*9x+1/9*10x=1/1
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/10/04 13:18:15
1/1*2x+1/2*3x+1/3*4x+1/4*5x+1/6*7x+1/7*8x+1/8*9x+1/9*10x=1/10
1/1*2x+1/2*3x+1/3*4x+1/4*5x+1/5*6x+1/6*7x+1/7*8x+1/8*9x+1/9*10x=1/10
1/(1*2)x+1/(2*3)x+1/(3*4)x+1/(4*5)x+1/(5*6)x+1/(6*7)x+1/(7*8)x+1/(8*9)x+1/(9*10)x=1/10
(1-1/2)x+(1/2-1/3)x+(1/3-1/4)x+(1/4-1/5)x+(1/5-1/6)x+(1/6-1/7)x+(1/7-1/8)x+(1/8-1/9)x+(1/9-1/10)x=1/10
(1-1/10)x=1/10
9/10x=1/10
x=1/9
1/1*2x+1/2*3x+1/3*4x+1/4*5x+1/5*6x+1/6*7x+1/7*8x+1/8*9x+1/9*10x=1/10
1/(1*2x)+1/(2*3x)+1/(3*4x)+1/(4*5x)+1/(5*6x)+1/(6*7x)+1/(7*8x)+1/(8*9x)+1/(9*10x)=1/10
(1-1/2)/x+(1/2-1/3)/x+(1/3-1/4)/x+(1/4-1/5)/x+(1/5-1/6)/x+(1/6-1/7)/x+(1/7-1/8)/x+(1/8-1/9)/x+(1/9-1/10)/x=1/10
(1-1/10)/x=1/10
(9/10)/x=1/10
9/10=(1/10)x
x=9
您在电脑上这样写题目会产生异议的,最好写上括号.1/5*6x这项一定漏写了吧.记住这个公式:1/(n*(n+1))=1/n-1/(n+1).
1/(1*2)x+1/(2*3)x+1/(3*4)x+1/(4*5)x+1/(5*6)x+1/(6*7)x+1/(7*8)x+1/(8*9)x+1/(9*10)x=1/10
(1-1/2)x+(1/2-1/3)x+(1/3-1/4)x+(1/4-1/5)x+(1/5-1/6)x+(1/6-1/7)x+(1/7-1/8)x+(1/8-1/9)x+(1/9-1/10)x=1/10
(1-1/10)x=1/10
9/10x=1/10
x=1/9
1/1*2x+1/2*3x+1/3*4x+1/4*5x+1/5*6x+1/6*7x+1/7*8x+1/8*9x+1/9*10x=1/10
1/(1*2x)+1/(2*3x)+1/(3*4x)+1/(4*5x)+1/(5*6x)+1/(6*7x)+1/(7*8x)+1/(8*9x)+1/(9*10x)=1/10
(1-1/2)/x+(1/2-1/3)/x+(1/3-1/4)/x+(1/4-1/5)/x+(1/5-1/6)/x+(1/6-1/7)/x+(1/7-1/8)/x+(1/8-1/9)/x+(1/9-1/10)/x=1/10
(1-1/10)/x=1/10
(9/10)/x=1/10
9/10=(1/10)x
x=9
您在电脑上这样写题目会产生异议的,最好写上括号.1/5*6x这项一定漏写了吧.记住这个公式:1/(n*(n+1))=1/n-1/(n+1).
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
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),
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
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
(x+1)(x+2)(x+3)(x+4)(x+5)(x+6)(x+7)(x+8)(x+9)(x+10)请化简
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
X+7/X+1+X+8/X+2-X+9/X+3-X+10/X+4 的解法
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3