Whakaoti mō x
x\in (-\infty,-1]\cup (2,\infty)
Graph
Tohaina
Kua tāruatia ki te papatopenga
x+1\leq 0 2x-4<0
Kia ≥0 rawa te otinga, hei ≤0 a x+1 me 2x-4 tahi, hei ≥0 rānei rāua tahi, otiia tē taea ai hei kore te 2x-4. Whakaarohia te tauira ina tōraro tahi a x+1\leq 0 me 2x-4.
x\leq -1
Te otinga e whakaea i ngā koreōrite e rua ko x\leq -1.
x+1\geq 0 2x-4>0
Whakaarohia te tauira ina tōrunga tahi a x+1\geq 0 me 2x-4.
x>2
Te otinga e whakaea i ngā koreōrite e rua ko x>2.
x\leq -1\text{; }x>2
Ko te otinga whakamutunga ko te whakakotahi i ngā otinga kua whiwhi.
Ngā Tauira
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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