解不等式(3x-5)/(x²+2x-3)≤2 (详细过程)

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解不等式(3x-5)/(x²+2x-3)≤2(详细过程)解不等式(3x-5)/(x²+2x-3)≤2(详细过程)解不等式(3x-5)/(x²+2x-3)≤2(详细过程)(

解不等式(3x-5)/(x²+2x-3)≤2 (详细过程)
解不等式(3x-5)/(x²+2x-3)≤2 (详细过程)

解不等式(3x-5)/(x²+2x-3)≤2 (详细过程)
(3x-5)/(x²+2x-3)-2≤0
(3x-5-2x²-4x+6)/(x²+2x-3)≤0
(-2x²-x+1)/(x²+2x-3)≤0
相除小于等于0则相乘小于等于0
(-2x²-x+1)(x²+2x-3)≤0
两边乘-1
(2x²+x-1)(x²+2x-3)≥0
(x+1)(2x-1)(x+3)(x-1)≥0
零点是-3,-1,1/2,1
所以x≤-3,-1≤x≤1/2,x≥1
分母x²+2x-3≠0
(x+3)(x-1)≠0
x≠-3,x≠1
所以x<-3,-1≤x≤1/2,x>1

(3x-5)/(x²+2x-3)-2≤0
(3x-5-2x²-4x+6)/(x²+2x-3)≤0
(-2x²-x+1)/(x²+2x-3)≤0
相除小于等于0则相乘小于等于0
(-2x²-x+1)(x²+2x-3)≤0
两边乘<1-1>
(2x²+x-1)(x²...

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(3x-5)/(x²+2x-3)-2≤0
(3x-5-2x²-4x+6)/(x²+2x-3)≤0
(-2x²-x+1)/(x²+2x-3)≤0
相除小于等于0则相乘小于等于0
(-2x²-x+1)(x²+2x-3)≤0
两边乘<1-1>
(2x²+x-1)(x²+2x-3)≥5
(x+1)(2x-1)(x+3)(x-1)≥0
零点是-3,-1,1/2,1
所以x≤-3,-1≤x≤1/2,x≥1
分母x²+2x-3≠0
(x+3)(x-1)≠0
x≠-3,x≠1
x<-3,-1≤x≤12=x>1

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(3x-5)/(x²+2x-3)≤2
移项:(3x-5)/(x²+2x-3)-2≤0
统分:(3x-5-2x²-4x+6 )/(x²+2x-3)≤0
合并同类项:-(2x-1)(x+1)/[(x+3)(x-1)]≤0
亦即:(2x-1)(x+1)/[(x+3)(x-1)]≥0
在分母不为0的情况下等价于:
(...

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(3x-5)/(x²+2x-3)≤2
移项:(3x-5)/(x²+2x-3)-2≤0
统分:(3x-5-2x²-4x+6 )/(x²+2x-3)≤0
合并同类项:-(2x-1)(x+1)/[(x+3)(x-1)]≤0
亦即:(2x-1)(x+1)/[(x+3)(x-1)]≥0
在分母不为0的情况下等价于:
(2x-1)(x+1)(x+3)(x-1)≥0
(x²+2x-3≠0)
(x+3)(x+1)(x-0.5)(x-1)≥0
(x≠-3且x≠1)
x<-3或-1≤x≤0.5或x>1

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