Concept explainers
To find the values of x at which the function changes sign on the given interval and to sketch the graph of the interval, and indicate the sign of the function on each subinterval.
Answer to Problem 9QR
The function changes sign at
Explanation of Solution
Given information:
The given function is
Concept used:
Values at which a function changes its sign are the roots of that function.
Calculation :
To obtain the roots equate the function to 0.
The function will never be zero because the numerator is always non-zero. Since
The function changes sign at
Chapter 8 Solutions
Calculus: Graphical, Numerical, Algebraic
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