49t^2=4

解

49 t^{2} = 4

t = \frac{2}{7}, t = - \frac{2}{7}

十進法表記

t = 0.28571 \dots, t = - 0.28571 \dots

解答ステップ

49 t^{2} = 4

以下で両辺を割る

49

t^{2} = \frac{4}{49}

x^{2} = f (a)

の場合, 解は

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

t = \frac{4}{49}, t = - \frac{4}{49}

\frac{4}{49} = \frac{2}{7}

- \frac{4}{49} = - \frac{2}{7}

t = \frac{2}{7}, t = - \frac{2}{7}