k为怎样的值时,函数f(x)=(kx²+4x+k+2)^1\2+(x²-kx+1)°的定义域是R
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/26 03:04:04
![k为怎样的值时,函数f(x)=(kx²+4x+k+2)^1\2+(x²-kx+1)°的定义域是R](/uploads/image/z/763313-41-3.jpg?t=k%E4%B8%BA%E6%80%8E%E6%A0%B7%E7%9A%84%E5%80%BC%E6%97%B6%2C%E5%87%BD%E6%95%B0f%28x%29%3D%28kx%26%23178%3B%2B4x%2Bk%2B2%29%5E1%5C2%2B%28x%26%23178%3B-kx%2B1%29%C2%B0%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E6%98%AFR)
k为怎样的值时,函数f(x)=(kx²+4x+k+2)^1\2+(x²-kx+1)°的定义域是R
k为怎样的值时,函数f(x)=(kx²+4x+k+2)^1\2+(x²-kx+1)°的定义域是R
k为怎样的值时,函数f(x)=(kx²+4x+k+2)^1\2+(x²-kx+1)°的定义域是R
根据题意得
k>0
△1=16-4k(k+2)