Concept explainers
(a)
To Calculate:
The real values of
Given:
Concepts Used:
The value of a rational function becomes zero at the zeroes of its numerator.
Calculations:
The numerator of
Conclusion:
The value of
(b)
To Calculate:
The real values of
Given:
Concepts Used:
The value of a rational function becomes undefined at the zeroes of its denominator.
Calculations:
The denominator of
Conclusion:
The value of
(c)
To Calculate:
The real values of
Given:
Concepts Used:
Drawing of a sign chart for rational function.
Known from previous parts:
The value of
The value of
Calculations:
Draw the sign chart of
Analyze the signs of factors in numerator and denominator in all the intervals and write the sign of
Conclusion:
The value of
(d)
To Calculate:
The real values of
Given:
Concepts Used:
Reading of a sign chart for rational function.
Known from previous parts:
The sign chart of
Calculations:
Read the above sign chart to find the values of
Conclusion:
The value of
Chapter 2 Solutions
PRECALCULUS:GRAPHICAL,...-NASTA ED.
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