$$$\left(- \frac{5}{22}\right)\cdot \left\langle 1, 2, -1, 0, 4\right\rangle$$$
入力内容
$$$\left(- \frac{5}{22}\right)\cdot \left\langle 1, 2, -1, 0, 4\right\rangle$$$を計算せよ。
解答
ベクトルの各成分にスカラーを乗じる:
$$${\color{Fuchsia}\left(- \frac{5}{22}\right)}\cdot \left\langle 1, 2, -1, 0, 4\right\rangle = \left\langle {\color{Fuchsia}\left(- \frac{5}{22}\right)}\cdot \left(1\right), {\color{Fuchsia}\left(- \frac{5}{22}\right)}\cdot \left(2\right), {\color{Fuchsia}\left(- \frac{5}{22}\right)}\cdot \left(-1\right), {\color{Fuchsia}\left(- \frac{5}{22}\right)}\cdot \left(0\right), {\color{Fuchsia}\left(- \frac{5}{22}\right)}\cdot \left(4\right)\right\rangle = \left\langle - \frac{5}{22}, - \frac{5}{11}, \frac{5}{22}, 0, - \frac{10}{11}\right\rangle$$$
解答
$$$\left(- \frac{5}{22}\right)\cdot \left\langle 1, 2, -1, 0, 4\right\rangle = \left\langle - \frac{5}{22}, - \frac{5}{11}, \frac{5}{22}, 0, - \frac{10}{11}\right\rangle\approx \left\langle -0.227272727272727, -0.454545454545455, 0.227272727272727, 0, -0.909090909090909\right\rangle$$$A