1/2 =x^2

解

\frac{1}{2} = x^{2}

x = \frac{1}{2}, x = - \frac{1}{2}

十進法表記

x = 0.70710 \dots, x = - 0.70710 \dots

解答ステップ

\frac{1}{2} = x^{2}

辺を交換する

x^{2} = \frac{1}{2}

x^{2} = f (a)

の場合, 解は

x = f (a), - f (a)

x = \frac{1}{2}, x = - \frac{1}{2}

\frac{1}{2} = \frac{1}{2}

- \frac{1}{2} = - \frac{1}{2}

x = \frac{1}{2}, x = - \frac{1}{2}