解方程:1/x(x+2)+1/(x+2)(x+4)+……+1/(x+8)(x+10)=5/24(x+10)
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/10 16:45:45
解方程:1/x(x+2)+1/(x+2)(x+4)+……+1/(x+8)(x+10)=5/24(x+10)
1/x(x+2)+1/(x+2)(x+4)+……+1/(x+8)(x+10)=5/24(x+10)
1/2*[1/x-1/(x+2)]+1/2*[1/(x+2)-1/(x+4)]+.+1/2*[1/(x+8)-1/(x+10)]=5/24(x+10)
1/2*[1/x-1/(x+2)+1/(x+2)-1/(x+4)+.+1/(x+8)-1/(x+10)]=5/24(x+10)
1/2*[1/x-1/(x+10)]=5/24(x+10)
1/2*[(x+10-x)/x(x+10)]=5/24(x+10)
1/2*[10/x(x+10)]=5/24(x+10)
5/x(x+10)=5/24(x+10)
5/x=5/24
x=24
经检验x=24是方程的解
1/2*[1/x-1/(x+2)]+1/2*[1/(x+2)-1/(x+4)]+.+1/2*[1/(x+8)-1/(x+10)]=5/24(x+10)
1/2*[1/x-1/(x+2)+1/(x+2)-1/(x+4)+.+1/(x+8)-1/(x+10)]=5/24(x+10)
1/2*[1/x-1/(x+10)]=5/24(x+10)
1/2*[(x+10-x)/x(x+10)]=5/24(x+10)
1/2*[10/x(x+10)]=5/24(x+10)
5/x(x+10)=5/24(x+10)
5/x=5/24
x=24
经检验x=24是方程的解
解方程:1/x(x+2)+1/(x+2)(x+4)+……+1/(x+8)(x+10)=5/24(x+10)
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解方程:1/x(x+2)+1/(x+2)(x+4)+...1/(x+8)(x+10)=5/24.
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
解方程1/x(x+2)+1/(x+2)(x+4)+……+1/(x+8)(x-10)=5/24