某汽车租赁公司的月收益y元与每辆车的月租金x元间的关系为y=-x2/50+162x-21000,那别人的答案是 y = -x²/50+162x-21000 = -1/50·(x²-8100x)-21000 = -1/50·[(x-4050)²-4050²]-21000 = -1/50·(x-4050)²+307
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 22:18:19
![某汽车租赁公司的月收益y元与每辆车的月租金x元间的关系为y=-x2/50+162x-21000,那别人的答案是 y = -x²/50+162x-21000 = -1/50·(x²-8100x)-21000 = -1/50·[(x-4050)²-4050²]-21000 = -1/50·(x-4050)²+307](/uploads/image/z/13822463-47-3.jpg?t=%E6%9F%90%E6%B1%BD%E8%BD%A6%E7%A7%9F%E8%B5%81%E5%85%AC%E5%8F%B8%E7%9A%84%E6%9C%88%E6%94%B6%E7%9B%8Ay%E5%85%83%E4%B8%8E%E6%AF%8F%E8%BE%86%E8%BD%A6%E7%9A%84%E6%9C%88%E7%A7%9F%E9%87%91x%E5%85%83%E9%97%B4%E7%9A%84%E5%85%B3%E7%B3%BB%E4%B8%BAy%3D-x2%2F50%2B162x-21000%2C%E9%82%A3%E5%88%AB%E4%BA%BA%E7%9A%84%E7%AD%94%E6%A1%88%E6%98%AF+y+%3D+-x%26%23178%3B%2F50%2B162x-21000+%3D+-1%2F50%C2%B7%28x%26%23178%3B-8100x%29-21000+%3D+-1%2F50%C2%B7%5B%28x-4050%29%26%23178%3B-4050%26%23178%3B%5D-21000+%3D+-1%2F50%C2%B7%28x-4050%29%26%23178%3B%2B307)
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