计算:(1/X^2+3X+2)+(1/X^2+5X+6)+(1/X^2+7X+12)=(1/X^2+9X+20)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/05/03 20:21:43
计算:(1/X^2+3X+2)+(1/X^2+5X+6)+(1/X^2+7X+12)=(1/X^2+9X+20)
应该是:(1/X^2+3X+2)+(1/X^2+5X+6)+(1/X^2+7X+12)+(1/X^2+9X+20)
应该是:(1/X^2+3X+2)+(1/X^2+5X+6)+(1/X^2+7X+12)+(1/X^2+9X+20)
化简得2/x^2+6x=0,即(1+3x^3)/x^2=0,所以x=-(1/3)^(1/3)
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
计算:(1/X^2+3X+2)+(1/X^2+5X+6)+(1/X^2+7X+12)=(1/X^2+9X+20)
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
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^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
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计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
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计算:(x+1)x=7 (x-1)(x+2)=30 (3-x)(3-x)+x=9