若椭圆x^2+Y^2/4=1上每个点的横坐标不变,纵坐标缩短为原来的1/2 则曲线方程为?老师说这个是易错题.谁能好好讲讲阿.答案是x^2+Y^2=1 不是x^2+[(y/2)^2]/4=1 都说了是易错题.谁能好好讲讲啊 究竟为什
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![若椭圆x^2+Y^2/4=1上每个点的横坐标不变,纵坐标缩短为原来的1/2 则曲线方程为?老师说这个是易错题.谁能好好讲讲阿.答案是x^2+Y^2=1 不是x^2+[(y/2)^2]/4=1 都说了是易错题.谁能好好讲讲啊 究竟为什](/uploads/image/z/13052564-44-4.jpg?t=%E8%8B%A5%E6%A4%AD%E5%9C%86x%5E2%2BY%5E2%2F4%3D1%E4%B8%8A%E6%AF%8F%E4%B8%AA%E7%82%B9%E7%9A%84%E6%A8%AA%E5%9D%90%E6%A0%87%E4%B8%8D%E5%8F%98%2C%E7%BA%B5%E5%9D%90%E6%A0%87%E7%BC%A9%E7%9F%AD%E4%B8%BA%E5%8E%9F%E6%9D%A5%E7%9A%841%2F2+%E5%88%99%E6%9B%B2%E7%BA%BF%E6%96%B9%E7%A8%8B%E4%B8%BA%3F%E8%80%81%E5%B8%88%E8%AF%B4%E8%BF%99%E4%B8%AA%E6%98%AF%E6%98%93%E9%94%99%E9%A2%98.%E8%B0%81%E8%83%BD%E5%A5%BD%E5%A5%BD%E8%AE%B2%E8%AE%B2%E9%98%BF.%E7%AD%94%E6%A1%88%E6%98%AFx%5E2%2BY%5E2%3D1+%E4%B8%8D%E6%98%AFx%5E2%2B%5B%28y%2F2%29%5E2%5D%2F4%3D1+%E9%83%BD%E8%AF%B4%E4%BA%86%E6%98%AF%E6%98%93%E9%94%99%E9%A2%98.%E8%B0%81%E8%83%BD%E5%A5%BD%E5%A5%BD%E8%AE%B2%E8%AE%B2%E5%95%8A+%E7%A9%B6%E7%AB%9F%E4%B8%BA%E4%BB%80)
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