Pearson eText Algebra & Trigonometry -- Instant Access (Pearson+)
7th Edition
ISBN: 9780137394012
Author: ROBERT BLITZER
Publisher: PEARSON+
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Chapter 2.7, Problem 68E
(a)
To determine
The function, f
(b)
To determine
The times of day when the average happiness level is 3.
(c)
To determine
The ordered pairs in part ( b )
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Use the graph of the function y = g(x) below to answer the questions.
y'
-5
-4
4-
3-
27
-2
-3+
-4
x
4
(a) Is g(-2) negative?
Yes
No
(b) For which value(s) of x is g(x) > 0?
Write your answer using interval notation.
☐
(c) For which value(s) of x is g(x) = 0?
If there is more than one value, separate them with commas.
0,0... (0,0) (0,0)
(0,0) (0,0) OVO
0
It is given that E4E3E2E1A=⎡⎣⎢⎢⎢−1002−40488⎤⎦⎥⎥⎥.
Here the matrices E4, E3, E2, and, E1 are:
E1=⎡⎣⎢⎢⎢100010008⎤⎦⎥⎥⎥E2=⎡⎣⎢⎢⎢100010−501⎤⎦⎥⎥⎥E3=⎡⎣⎢⎢⎢1000−10001⎤⎦⎥⎥⎥E4=⎡⎣⎢⎢⎢001010100⎤⎦⎥⎥⎥
It is given that E4E3E2E1A=⎡⎣⎢⎢⎢−1002−40488⎤⎦⎥⎥⎥.
Here the matrices E4, E3, E2, and, E1 are:
E1=⎡⎣⎢⎢⎢100010008⎤⎦⎥⎥⎥E2=⎡⎣⎢⎢⎢100010−501⎤⎦⎥⎥⎥E3=⎡⎣⎢⎢⎢1000−10001⎤⎦⎥⎥⎥E4=⎡⎣⎢⎢⎢001010100⎤⎦⎥⎥⎥
What is the determinant of A?
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