已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y有最大值还是最小值?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 12:11:10
![已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y有最大值还是最小值?](/uploads/image/z/8618387-59-7.jpg?t=%E5%B7%B2%E7%9F%A5%3A%E6%8A%9B%E7%89%A9%E7%BA%BFy%EF%BC%9D%26%23190%3B%EF%BC%88x%EF%BC%8D1%EF%BC%89%26%23178%3B%EF%BC%8D3+%EF%BC%881%EF%BC%89%E5%86%99%E5%87%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E5%BC%80%E5%8F%A3%E6%96%B9%E5%90%91%2C%E5%AF%B9%E7%A7%B0%E8%BD%B4%EF%BC%9B+%EF%BC%882%EF%BC%89%E5%87%BD%E6%95%B0y%E5%B7%B2%E7%9F%A5%3A%E6%8A%9B%E7%89%A9%E7%BA%BFy%EF%BC%9D%26%23190%3B%EF%BC%88x%EF%BC%8D1%EF%BC%89%26%23178%3B%EF%BC%8D3+%EF%BC%881%EF%BC%89%E5%86%99%E5%87%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E5%BC%80%E5%8F%A3%E6%96%B9%E5%90%91%2C%E5%AF%B9%E7%A7%B0%E8%BD%B4%EF%BC%9B+%EF%BC%882%EF%BC%89%E5%87%BD%E6%95%B0y%E6%9C%89%E6%9C%80%E5%A4%A7%E5%80%BC%E8%BF%98%E6%98%AF%E6%9C%80%E5%B0%8F%E5%80%BC%3F)
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已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y有最大值还是最小值?
已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y
已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y有最大值还是最小值?并求出这个最大(小)值; (3)设抛物线与y轴的交点为p,与x轴的交点为Q,求直线PQ的函数解析式?
已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y已知:抛物线y=¾(x-1)²-3 (1)写出抛物线开口方向,对称轴; (2)函数y有最大值还是最小值?
1)开口向上,对称轴为x=1
2)有最小值,当x=1时,最小值为-3
3)x=0时,y=3/4-3=-9/4,即P为(0,-9/4)
y=0时,x=3,-1,即Q为(3,0)或(-1,0)
由截距式得PQ方程分别为:
x/3+y/(-9/4)=1
-x+y/(-9/4)=1