.已知一直角三角形纸片ABC,∠ACB=90°,AC=2,BC=4.折叠该纸片,使点B落在边AC上,折痕与边BC交于点M,与边AB交于点N.(3)若折叠后点B落在边AC上的点P处(如图④),设CP=x,CM=y,求出y关于x的函数
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![.已知一直角三角形纸片ABC,∠ACB=90°,AC=2,BC=4.折叠该纸片,使点B落在边AC上,折痕与边BC交于点M,与边AB交于点N.(3)若折叠后点B落在边AC上的点P处(如图④),设CP=x,CM=y,求出y关于x的函数](/uploads/image/z/1693116-36-6.jpg?t=%EF%BC%8E%E5%B7%B2%E7%9F%A5%E4%B8%80%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2%E7%BA%B8%E7%89%87ABC%2C%E2%88%A0ACB%EF%BC%9D90%C2%B0%2CAC%EF%BC%9D2%2CBC%EF%BC%9D4.%E6%8A%98%E5%8F%A0%E8%AF%A5%E7%BA%B8%E7%89%87%2C%E4%BD%BF%E7%82%B9B%E8%90%BD%E5%9C%A8%E8%BE%B9AC%E4%B8%8A%2C%E6%8A%98%E7%97%95%E4%B8%8E%E8%BE%B9BC%E4%BA%A4%E4%BA%8E%E7%82%B9M%2C%E4%B8%8E%E8%BE%B9AB%E4%BA%A4%E4%BA%8E%E7%82%B9N.%EF%BC%883%EF%BC%89%E8%8B%A5%E6%8A%98%E5%8F%A0%E5%90%8E%E7%82%B9B%E8%90%BD%E5%9C%A8%E8%BE%B9AC%E4%B8%8A%E7%9A%84%E7%82%B9P%E5%A4%84%EF%BC%88%E5%A6%82%E5%9B%BE%E2%91%A3%EF%BC%89%2C%E8%AE%BECP%EF%BC%9Dx%2CCM%EF%BC%9Dy%2C%E6%B1%82%E5%87%BAy%E5%85%B3%E4%BA%8Ex%E7%9A%84%E5%87%BD%E6%95%B0)
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