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IB MAI HL Geometry & Trigonometry Topic 3.5 Geometric Transformations (id: 521af

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admin 发表于 2024-2-17 21:15:23 | 显示全部楼层 |阅读模式
本题目来源于试卷: IB MAI HL Geometry & Trigonometry Topic 3.5 Geometric Transformations,类别为 IB数学

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A geometric transformationa0*akxq 5 d0nb T (1,kxucu6q-xqu/ r gjc8tiq.: $\left(\begin{array}{l}x \\ y\end{array}\right) \mapsto\left(\begin{array}{c}x \\ y^{\prime}\end{array}\right)$ is defined by
$\left(\begin{array}{l}
x^{\prime} \\
y^{\prime}
\end{array}\right)=\left(\begin{array}{cc}
\cos \left(\frac{\pi}{3}\right) & \sin \left(\frac{\pi}{3}\right) \\
\sin \left(\frac{\pi}{3}\right) & \cos \left(\frac{\pi}{3}\right)
\end{array}\right)\left(\begin{array}{l}
x \\
y
\end{array}\right)-\frac{\sqrt{3}}{2}\left(\begin{array}{l}
1 \\
2
\end{array}\right)$ .
1. Find the coordinates of the image of the point $P(1,-\sqrt{3})$ . $\left(-a-\frac{\sqrt{b}}{c},-\sqrt{d}\right) $ a =    b =    c =    d =   
2. Given that T : $\left(\begin{array}{l}a \\ b\end{array}\right) \mapsto \frac{1}{2}\left(\begin{array}{l}a \\ b\end{array}\right)$ , find the value of a and the value of b . a =    b =   
A rhombus R with vertices lying on the x y -plane is transformed by T .
3. Show that the area of the image is half the size of R .




参考答案:
空格1: 1空格2: 3空格3: 2空格4: 3空格5: 2空格6: 1


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