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Solve-2x-x-1-3-




Question Number 178595 by Acem last updated on 18/Oct/22
Solve ((2x)/(x+1))≥ 3
Solve2xx+13
Answered by Acem last updated on 19/Oct/22
The safest and surest way to avoid making   mental mistakes:     ((2x)/(x+1))−3≥ 0 ⇔ ((−x−3)/(x+1))≥ 0     ⇔ ((x^(Always try it as positive) +3)/(x+1)) ≤ 0       x     −∞         −3           −1             +∞   x+3              −     0      +             +   x+1              −             −    0       +   Frac.            +     0      −    ∥       +     ⇒ x∈ [−3, −1[
Thesafestandsurestwaytoavoidmakingmentalmistakes:2xx+130x3x+10xAlwaystryitaspositive+3x+10x31+x+30++x+10+Frac.+0+x[3,1[
Commented by Acem last updated on 18/Oct/22
 (a/(b )) (a/(⇛ make it as your opponent that you must not forget))
abamakeitasyouropponentthatyoumustnotforget

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