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$$$\frac{5 \sqrt{34}}{34}\cdot \left\langle 1, - \frac{12}{25}, \frac{9}{25}\right\rangle$$$
您的输入
计算 $$$\frac{5 \sqrt{34}}{34}\cdot \left\langle 1, - \frac{12}{25}, \frac{9}{25}\right\rangle$$$。
解答
将向量的每个坐标乘以该标量：
$$${\color{GoldenRod}\left(\frac{5 \sqrt{34}}{34}\right)}\cdot \left\langle 1, - \frac{12}{25}, \frac{9}{25}\right\rangle = \left\langle {\color{GoldenRod}\left(\frac{5 \sqrt{34}}{34}\right)}\cdot \left(1\right), {\color{GoldenRod}\left(\frac{5 \sqrt{34}}{34}\right)}\cdot \left(- \frac{12}{25}\right), {\color{GoldenRod}\left(\frac{5 \sqrt{34}}{34}\right)}\cdot \left(\frac{9}{25}\right)\right\rangle = \left\langle \frac{5 \sqrt{34}}{34}, - \frac{6 \sqrt{34}}{85}, \frac{9 \sqrt{34}}{170}\right\rangle$$$
答案
$$$\frac{5 \sqrt{34}}{34}\cdot \left\langle 1, - \frac{12}{25}, \frac{9}{25}\right\rangle = \left\langle \frac{5 \sqrt{34}}{34}, - \frac{6 \sqrt{34}}{85}, \frac{9 \sqrt{34}}{170}\right\rangle\approx \left\langle 0.857492925712544, -0.411596604342021, 0.308697453256516\right\rangle$$$A