若函数f(x)=(kx²+4kx+3)分之(根号下x-5的3次方根)的定义域为R,求实数k的取值范围.急
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![若函数f(x)=(kx²+4kx+3)分之(根号下x-5的3次方根)的定义域为R,求实数k的取值范围.急](/uploads/image/z/1265796-36-6.jpg?t=%E8%8B%A5%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3D%EF%BC%88kx%26%23178%3B%2B4kx%2B3%29%E5%88%86%E4%B9%8B%EF%BC%88%E6%A0%B9%E5%8F%B7%E4%B8%8Bx-5%E7%9A%843%E6%AC%A1%E6%96%B9%E6%A0%B9%EF%BC%89%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E4%B8%BAR%2C%E6%B1%82%E5%AE%9E%E6%95%B0k%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.%E6%80%A5)
若函数f(x)=(kx²+4kx+3)分之(根号下x-5的3次方根)的定义域为R,求实数k的取值范围.急
若函数f(x)=(kx²+4kx+3)分之(根号下x-5的3次方根)的定义域为R,求实数k的取值范围.急
若函数f(x)=(kx²+4kx+3)分之(根号下x-5的3次方根)的定义域为R,求实数k的取值范围.急
kx²+4x+3≠0
x-5≥0