Whakaoti mō x
x\in \begin{bmatrix}\frac{2}{3},\frac{7}{4}\end{bmatrix}
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Tohaina
Kua tāruatia ki te papatopenga
2-3x\leq 0 4x-7\leq 0
Kia ≥0 te otinga, me ≤0 tahi, me ≥0 tahi rānei te 2-3x me te 4x-7. Whakaarohia te tauira ina he ≤0 tahi te 2-3x me te 4x-7.
x\in \begin{bmatrix}\frac{2}{3},\frac{7}{4}\end{bmatrix}
Te otinga e whakaea i ngā koreōrite e rua ko x\in \left[\frac{2}{3},\frac{7}{4}\right].
4x-7\geq 0 2-3x\geq 0
Whakaarohia te tauira ina he ≥0 tahi te 2-3x me te 4x-7.
x\in \emptyset
He teka tēnei mō tētahi x ahakoa.
x\in \begin{bmatrix}\frac{2}{3},\frac{7}{4}\end{bmatrix}
Ko te otinga whakamutunga ko te whakakotahi i ngā otinga kua whiwhi.
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