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shanilafaridor97hl
25.08.2019 •
Mathematics
Use the drop-down menus to describe the key aspects of the function f(x) = –x2 – 2x – 1. the vertex is the . the function is increasing . the function is decreasing . the domain of the function is . the range of the function is .
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Ответ:
The vertex is the . maximum value
The function is increasing . when x < -1
The function is decreasing . when x >-1
The domain of the function is . all real numbers
The range of the function is all numbers less than or equal to 0
Step-by-step explanation: edg
Ответ:
The vertex of the parabola is the maximum value, i.e.,(-1,0). The function is increasing x<-1. the function is decreasing x>-1. the domain of the function is all real numbers. the range of the function is all real numbers less than or equal to 0.
Step-by-step explanation:
The given function is
The general vertex form of the parabola is
Where, (h,k) is vertex and a is stretch factor.
On comparing (1) and (2), we get
The vertex of the parabola is (-1,0). Since a=-1<1 so it is a downward parabola.
The axis of symmetry is x=-1. So, before -1 the function is increasing and after -1 the function is decreasing.
The vertex of a downward parabola is the point of maxima. So, the rang of the function can not exceed 0.
Therefore the vertex of the parabola is the maximum value, i.e.,(-1,0). The function is increasing x<-1. the function is decreasing x>-1. the domain of the function is all real numbers. the range of the function is all real numbers less than or equal to 0.
Ответ: