Y最大为4,经过点(3,1)(0,2),求函数解析式.这个嘛.给钱唉,正确率,上数学A本的.是(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)别搞错了对不起你
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 15:35:49
![Y最大为4,经过点(3,1)(0,2),求函数解析式.这个嘛.给钱唉,正确率,上数学A本的.是(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)别搞错了对不起你](/uploads/image/z/12652516-28-6.jpg?t=Y%E6%9C%80%E5%A4%A7%E4%B8%BA4%2C%E7%BB%8F%E8%BF%87%E7%82%B9%EF%BC%883%2C1%EF%BC%89%EF%BC%880%2C2%EF%BC%89%2C%E6%B1%82%E5%87%BD%E6%95%B0%E8%A7%A3%E6%9E%90%E5%BC%8F.%E8%BF%99%E4%B8%AA%E5%98%9B.%E7%BB%99%E9%92%B1%E5%94%89%2C%E6%AD%A3%E7%A1%AE%E7%8E%87%2C%E4%B8%8A%E6%95%B0%E5%AD%A6A%E6%9C%AC%E7%9A%84.%E6%98%AF%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%280-2%29%E5%88%AB%E6%90%9E%E9%94%99%E4%BA%86%E5%AF%B9%E4%B8%8D%E8%B5%B7%E4%BD%A0)
Y最大为4,经过点(3,1)(0,2),求函数解析式.这个嘛.给钱唉,正确率,上数学A本的.是(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)别搞错了对不起你
Y最大为4,经过点(3,1)(0,2),求函数解析式.
这个嘛.给钱唉,正确率,上数学A本的.
是(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)别搞错了对不起你们。
Y最大为4,经过点(3,1)(0,2),求函数解析式.这个嘛.给钱唉,正确率,上数学A本的.是(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)(0-2)别搞错了对不起你
令y=a(x-h)^2+4
代入(3,1)得:1=a(1-h)^2+4,得a(1-h)^2=-3
代入(0,2)得:2=ah^2+4, 得ah^2=-2
两式相除:(1-h)^2/h^2=3/2
3h^2=2-4h+2h^2
h^2+4h-2=0
h=-2+√6, 或-2-√6
当h=-2+√6时,a=-2/h^2=-2/(10-4√6)=-(5+2√6),
当h=-2-√6时,a=-2/h^2=-2/(10+4√6)=-(5-2√6)
因此y有以上两个解析式.