2013.07.1.求由曲线y=x²+3x和直线y=x+3所围成区域的面积.2.求曲线y=5-x²与直线y=x-1所包围的区域的面积.
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![2013.07.1.求由曲线y=x²+3x和直线y=x+3所围成区域的面积.2.求曲线y=5-x²与直线y=x-1所包围的区域的面积.](/uploads/image/z/643021-61-1.jpg?t=2013.07.1.%E6%B1%82%E7%94%B1%E6%9B%B2%E7%BA%BFy%3Dx%26%23178%3B%2B3x%E5%92%8C%E7%9B%B4%E7%BA%BFy%3Dx%2B3%E6%89%80%E5%9B%B4%E6%88%90%E5%8C%BA%E5%9F%9F%E7%9A%84%E9%9D%A2%E7%A7%AF.2.%E6%B1%82%E6%9B%B2%E7%BA%BFy%3D5-x%26%23178%3B%E4%B8%8E%E7%9B%B4%E7%BA%BFy%3Dx-1%E6%89%80%E5%8C%85%E5%9B%B4%E7%9A%84%E5%8C%BA%E5%9F%9F%E7%9A%84%E9%9D%A2%E7%A7%AF.)
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