1.求由抛物线y^2=4x与直线y=2x-4围成的平定积分的应用(4张)面图形D的面积S.2.函数y=-x2+2x+1与y=1相交形成一个闭合图形则该闭合图形的面积是?解释下第一个,和第二个.以第二个为例 为什么交点x1=0
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![1.求由抛物线y^2=4x与直线y=2x-4围成的平定积分的应用(4张)面图形D的面积S.2.函数y=-x2+2x+1与y=1相交形成一个闭合图形则该闭合图形的面积是?解释下第一个,和第二个.以第二个为例 为什么交点x1=0](/uploads/image/z/5893284-12-4.jpg?t=1.%E6%B1%82%E7%94%B1%E6%8A%9B%E7%89%A9%E7%BA%BFy%5E2%3D4x%E4%B8%8E%E7%9B%B4%E7%BA%BFy%3D2x-4%E5%9B%B4%E6%88%90%E7%9A%84%E5%B9%B3%E5%AE%9A%E7%A7%AF%E5%88%86%E7%9A%84%E5%BA%94%E7%94%A8%284%E5%BC%A0%29%E9%9D%A2%E5%9B%BE%E5%BD%A2D%E7%9A%84%E9%9D%A2%E7%A7%AFS.2.%E5%87%BD%E6%95%B0y%3D-x2%2B2x%2B1%E4%B8%8Ey%3D1%E7%9B%B8%E4%BA%A4%E5%BD%A2%E6%88%90%E4%B8%80%E4%B8%AA%E9%97%AD%E5%90%88%E5%9B%BE%E5%BD%A2%E5%88%99%E8%AF%A5%E9%97%AD%E5%90%88%E5%9B%BE%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AF%E6%98%AF%3F%E8%A7%A3%E9%87%8A%E4%B8%8B%E7%AC%AC%E4%B8%80%E4%B8%AA%2C%E5%92%8C%E7%AC%AC%E4%BA%8C%E4%B8%AA.%E4%BB%A5%E7%AC%AC%E4%BA%8C%E4%B8%AA%E4%B8%BA%E4%BE%8B+%E4%B8%BA%E4%BB%80%E4%B9%88%E4%BA%A4%E7%82%B9x1%3D0)
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