如图,有一块半径为2的半圆形钢板,计划剪裁成等腰梯形ABCD的形状,它的下底AB是圆O的直径,上底CD的端点在圆周上.(1)求梯形ABCD的周长y与腰长x间的函数解析式,并求出它的定义域;(2)求
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![如图,有一块半径为2的半圆形钢板,计划剪裁成等腰梯形ABCD的形状,它的下底AB是圆O的直径,上底CD的端点在圆周上.(1)求梯形ABCD的周长y与腰长x间的函数解析式,并求出它的定义域;(2)求](/uploads/image/z/8840799-63-9.jpg?t=%E5%A6%82%E5%9B%BE%2C%E6%9C%89%E4%B8%80%E5%9D%97%E5%8D%8A%E5%BE%84%E4%B8%BA2%E7%9A%84%E5%8D%8A%E5%9C%86%E5%BD%A2%E9%92%A2%E6%9D%BF%2C%E8%AE%A1%E5%88%92%E5%89%AA%E8%A3%81%E6%88%90%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2ABCD%E7%9A%84%E5%BD%A2%E7%8A%B6%2C%E5%AE%83%E7%9A%84%E4%B8%8B%E5%BA%95AB%E6%98%AF%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%2C%E4%B8%8A%E5%BA%95CD%E7%9A%84%E7%AB%AF%E7%82%B9%E5%9C%A8%E5%9C%86%E5%91%A8%E4%B8%8A%EF%BC%8E%EF%BC%881%EF%BC%89%E6%B1%82%E6%A2%AF%E5%BD%A2ABCD%E7%9A%84%E5%91%A8%E9%95%BFy%E4%B8%8E%E8%85%B0%E9%95%BFx%E9%97%B4%E7%9A%84%E5%87%BD%E6%95%B0%E8%A7%A3%E6%9E%90%E5%BC%8F%2C%E5%B9%B6%E6%B1%82%E5%87%BA%E5%AE%83%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%EF%BC%9B%EF%BC%882%EF%BC%89%E6%B1%82)
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