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$$$\frac{1}{\left|{t}\right|}\cdot \left\langle t, 0\right\rangle$$$
入力内容
$$$\frac{1}{\left|{t}\right|}\cdot \left\langle t, 0\right\rangle$$$を計算せよ。
解答
ベクトルの各成分にスカラーを乗じる:
$$${\color{Purple}\left(\frac{1}{\left|{t}\right|}\right)}\cdot \left\langle t, 0\right\rangle = \left\langle {\color{Purple}\left(\frac{1}{\left|{t}\right|}\right)}\cdot \left(t\right), {\color{Purple}\left(\frac{1}{\left|{t}\right|}\right)}\cdot \left(0\right)\right\rangle = \left\langle \frac{t}{\left|{t}\right|}, 0\right\rangle$$$
解答
$$$\frac{1}{\left|{t}\right|}\cdot \left\langle t, 0\right\rangle = \left\langle \frac{t}{\left|{t}\right|}, 0\right\rangle$$$A
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