二次函数表格抛物线y=-x²+2x-3华为y=(x-h)²+k的形式,则y=______的顶点坐标为____,对称轴是_____。函数y=-3x²+3,当x___时,函数值y随x的增大而减小,即函数在区间___上是减函数,当x___时
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![二次函数表格抛物线y=-x²+2x-3华为y=(x-h)²+k的形式,则y=______的顶点坐标为____,对称轴是_____。函数y=-3x²+3,当x___时,函数值y随x的增大而减小,即函数在区间___上是减函数,当x___时](/uploads/image/z/6863120-8-0.jpg?t=%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E8%A1%A8%E6%A0%BC%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D-x%26%23178%3B%2B2x-3%E5%8D%8E%E4%B8%BAy%3D%28x-h%29%26%23178%3B%2Bk%E7%9A%84%E5%BD%A2%E5%BC%8F%2C%E5%88%99y%3D______%E7%9A%84%E9%A1%B6%E7%82%B9%E5%9D%90%E6%A0%87%E4%B8%BA____%EF%BC%8C%E5%AF%B9%E7%A7%B0%E8%BD%B4%E6%98%AF_____%E3%80%82%E5%87%BD%E6%95%B0y%3D-3x%26%23178%3B%2B3%EF%BC%8C%E5%BD%93x___%E6%97%B6%EF%BC%8C%E5%87%BD%E6%95%B0%E5%80%BCy%E9%9A%8Fx%E7%9A%84%E5%A2%9E%E5%A4%A7%E8%80%8C%E5%87%8F%E5%B0%8F%EF%BC%8C%E5%8D%B3%E5%87%BD%E6%95%B0%E5%9C%A8%E5%8C%BA%E9%97%B4___%E4%B8%8A%E6%98%AF%E5%87%8F%E5%87%BD%E6%95%B0%EF%BC%8C%E5%BD%93x___%E6%97%B6)
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