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Question Number 115035 by bobhans last updated on 23/Sep/20

solve ∣ 4−(3/x) ∣ < 8

solve43x<8

Commented bybemath last updated on 23/Sep/20

⇔ −8 < 4−(3/x) < 8  case(1) → −8 < 4−(3/x)       (3/x) < 12 ; (1/x) < 4 ; ((1−4x)/x) < 0        ((4x−1)/x) > 0 ; x < 0 ∪ x > (1/4)  case(2) 4−(3/x) < 8 ; −(3/x) < 4    (3/x) > −4 ; ((3+4x)/x) > 0    x < −(3/4) ∪ x > 0  solution set is (−∞, −(3/4)) ∪((1/4), ∞)

8<43x<8 case(1)8<43x 3x<12;1x<4;14xx<0 4x1x>0;x<0x>14 case(2)43x<8;3x<4 3x>4;3+4xx>0 x<34x>0 solutionsetis(,34)(14,)

Commented bybobhans last updated on 23/Sep/20

santuyy

santuyy

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