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若曲线\(C\)的参数方程为\(\begin{cases}x=2\cos θ \\ y=1+2\sin θ\end{cases} (\)参数\(θ∈[- \dfrac{π}{2}, \dfrac{π}{2}] )\),则曲线\(C(\) \()\)
若曲线\(C\)的参数方程为\(\begin{cases}x=2\cos θ \\ y=1+2\sin \;θ\end{cases} (\)参数\(θ∈[- \dfrac{π}{2}, \dfrac{π}{2}] )\),则曲线\(C(\) \()\)
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