1.已知抛物线y=-2分之1x平方+(5-m)x+m-3的对称轴是y轴,求抛物线的顶点坐标2.已知抛物线y=x平方+x+m-2的顶点在第3象限,求m的取值范围.第1题算出的答案是不是m=5,然后顶点坐标是(-5,2)
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![1.已知抛物线y=-2分之1x平方+(5-m)x+m-3的对称轴是y轴,求抛物线的顶点坐标2.已知抛物线y=x平方+x+m-2的顶点在第3象限,求m的取值范围.第1题算出的答案是不是m=5,然后顶点坐标是(-5,2)](/uploads/image/z/10907454-30-4.jpg?t=1.%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D-2%E5%88%86%E4%B9%8B1x%E5%B9%B3%E6%96%B9%2B%285-m%29x%2Bm-3%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%E6%98%AFy%E8%BD%B4%2C%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E9%A1%B6%E7%82%B9%E5%9D%90%E6%A0%872.%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx%E5%B9%B3%E6%96%B9%2Bx%2Bm-2%E7%9A%84%E9%A1%B6%E7%82%B9%E5%9C%A8%E7%AC%AC3%E8%B1%A1%E9%99%90%2C%E6%B1%82m%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.%E7%AC%AC1%E9%A2%98%E7%AE%97%E5%87%BA%E7%9A%84%E7%AD%94%E6%A1%88%E6%98%AF%E4%B8%8D%E6%98%AFm%3D5%2C%E7%84%B6%E5%90%8E%E9%A1%B6%E7%82%B9%E5%9D%90%E6%A0%87%E6%98%AF%28-5%2C2%29)
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