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1.1.14 Mathematics experiment: Experiment 1.3 Function graphing—parametric equations
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　　Use calculation software to calculate the graph of the following parametric equation:

　　(1) ;

[ Detailed explanation of the experiment ]

　　(2) ;

[ Detailed explanation of the experiment ]

　　(3) ;

[ Detailed explanation of the experiment ]

　　(4) .

[ Detailed explanation of the experiment ]
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