1.f(x)=√ax^2+bx ,存在正数b,使得的定义域和值域相同.(1)求非零实数a的值(2)若函数g(x)=f(x)-b/x有零点,求b的最小值2.已知二次函数f(x)=ax^2+bx+c和一次函数g(x)=-bx,其中且满足a,b,c∈R,a>b>c,f(1)=0(1)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/20 16:10:12
![1.f(x)=√ax^2+bx ,存在正数b,使得的定义域和值域相同.(1)求非零实数a的值(2)若函数g(x)=f(x)-b/x有零点,求b的最小值2.已知二次函数f(x)=ax^2+bx+c和一次函数g(x)=-bx,其中且满足a,b,c∈R,a>b>c,f(1)=0(1)](/uploads/image/z/5682189-21-9.jpg?t=1.f%28x%29%3D%E2%88%9Aax%5E2%2Bbx+%2C%E5%AD%98%E5%9C%A8%E6%AD%A3%E6%95%B0b%2C%E4%BD%BF%E5%BE%97%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E5%92%8C%E5%80%BC%E5%9F%9F%E7%9B%B8%E5%90%8C.%EF%BC%881%EF%BC%89%E6%B1%82%E9%9D%9E%E9%9B%B6%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%80%BC%EF%BC%882%EF%BC%89%E8%8B%A5%E5%87%BD%E6%95%B0g%28x%29%3Df%28x%29-b%2Fx%E6%9C%89%E9%9B%B6%E7%82%B9%2C%E6%B1%82b%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC2.%E5%B7%B2%E7%9F%A5%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0f%28x%29%3Dax%5E2%2Bbx%2Bc%E5%92%8C%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0g%28x%29%3D-bx%2C%E5%85%B6%E4%B8%AD%E4%B8%94%E6%BB%A1%E8%B6%B3a%2Cb%2Cc%E2%88%88R%2Ca%3Eb%3Ec%2Cf%281%29%3D0%281%29)
xSNA~Mgݡ$tKd $E/WR᧖QXe)oCk$\y3s||LeZЬ+jr8D߲cKYQ%"١% >]*%{g";nmw7
6q0b0Ftԏx6RwRYp EIz)9 PQh\e"U߽1
\) I:W^