(1+x/(12))^{12}=0.12

解

(1 + \frac{x}{12})^{12} = 0.12

x = - 1.94351 \dots, x = - 22.05648 \dots

解答ステップ

(1 + \frac{x}{12})^{12} = 0.12

(g (x))^{n} = f (a)

の場合, n は偶数, 解は

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

解く

1 + \frac{x}{12} = 12 0.12 : x = - 1.94351 \dots

解く

1 + \frac{x}{12} = - 12 0.12 : x = - 22.05648 \dots

解答は

x = - 1.94351 \dots, x = - 22.05648 \dots