Math Problem Statement
已知函数 𝑓 ( 𝑥 ) = 𝑥 2 + 4 𝑥 − 5 f(x)=x 2 +4x−5。 求函数的顶点坐标。 判断该函数的增减性,并说明理由。 解不等式 𝑓 ( 𝑥 ) ≤ 0 f(x)≤0。
Solution
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Quadratic Functions
Vertex of a Parabola
Inequalities
Formulas
Vertex formula: x_vertex = -b / 2a
Quadratic equation: ax^2 + bx + c = 0
Discriminant: b^2 - 4ac
Theorems
Quadratic formula
Properties of a Parabola
Suitable Grade Level
Grades 9-11