Math Problem Statement
函数f(x)=kx^2+(k-5)x-1在区间[-2,+∞)内是减函数,求k的取值范围
Solution
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Math Problem Analysis
Mathematical Concepts
Calculus
Derivatives
Monotonic Functions
Quadratic Functions
Formulas
Derivative of f(x) = kx^2 + (k-5)x - 1 is f'(x) = 2kx + (k-5)
Theorems
Monotonicity of functions using derivatives
Quadratic formula for solving equations
Suitable Grade Level
Grades 10-12
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