Whakaoti mō x
x\in \begin{bmatrix}-\frac{4}{9},\frac{4}{9}\end{bmatrix}
Graph
Tohaina
Kua tāruatia ki te papatopenga
x^{2}\leq \frac{16}{81}
Whakawehea ngā taha e rua ki te 81. I te mea he tōrunga te 81, kāore e huri te ahunga koreōrite.
x^{2}\leq \left(\frac{4}{9}\right)^{2}
Tātaitia te pūtakerua o \frac{16}{81} kia tae ki \frac{4}{9}. Tuhia anō te \frac{16}{81} hei \left(\frac{4}{9}\right)^{2}.
|x|\leq \frac{4}{9}
E mau ana te koreōrite mō |x|\leq \frac{4}{9}.
x\in \begin{bmatrix}-\frac{4}{9},\frac{4}{9}\end{bmatrix}
Tuhia anō te |x|\leq \frac{4}{9} hei x\in \left[-\frac{4}{9},\frac{4}{9}\right].
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