Datrys ar gyfer x
x\in \begin{bmatrix}-\frac{\sqrt{5}}{5},\frac{\sqrt{5}}{5}\end{bmatrix}
Graff
Rhannu
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x^{2}\leq \frac{1}{5}
Rhannu’r ddwy ochr â 5. Gan fod 5 yn bositif, mae cyfeiriad yr anghydraddoldeb yn aros yr un peth.
x^{2}\leq \left(\frac{\sqrt{5}}{5}\right)^{2}
Cyfrifo ail isradd \frac{1}{5} a chael \frac{\sqrt{5}}{5}. Ailysgrifennwch \frac{1}{5} fel \left(\frac{\sqrt{5}}{5}\right)^{2}.
|x|\leq \frac{\sqrt{5}}{5}
Mae anghydraddoldeb ar gyfer |x|\leq \frac{\sqrt{5}}{5}.
x\in \begin{bmatrix}-\frac{\sqrt{5}}{5},\frac{\sqrt{5}}{5}\end{bmatrix}
Ailysgrifennwch |x|\leq \frac{\sqrt{5}}{5} fel x\in \left[-\frac{\sqrt{5}}{5},\frac{\sqrt{5}}{5}\right].
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