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$$$\frac{4}{25}\cdot \left\langle 0, 3, 4\right\rangle$$$
您的输入
计算 $$$\frac{4}{25}\cdot \left\langle 0, 3, 4\right\rangle$$$。
解答
将向量的每个坐标乘以该标量：
$$${\color{Blue}\left(\frac{4}{25}\right)}\cdot \left\langle 0, 3, 4\right\rangle = \left\langle {\color{Blue}\left(\frac{4}{25}\right)}\cdot \left(0\right), {\color{Blue}\left(\frac{4}{25}\right)}\cdot \left(3\right), {\color{Blue}\left(\frac{4}{25}\right)}\cdot \left(4\right)\right\rangle = \left\langle 0, \frac{12}{25}, \frac{16}{25}\right\rangle$$$
答案
$$$\frac{4}{25}\cdot \left\langle 0, 3, 4\right\rangle = \left\langle 0, \frac{12}{25}, \frac{16}{25}\right\rangle = \left\langle 0, 0.48, 0.64\right\rangle$$$A
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