
Concept explainers
To write the Partial fraction decomposition of the rational expression

Answer to Problem 68E
The partial fraction of expansion is
Explanation of Solution
Given information:
The rational expression is
The rational expression is
Here the denominator contain repeated linear terms so extral partial fraction is also includedand the given rational expression can be expressed as sum of partial fraction.
where
Now , for finding the value of coefficients
Comparing coefficients of
Comparing constant terms in the equation
therefore,
Checking algebraically,
Checking Graphically,
The graph of rational expression and partial fraction is same hence graphically it is proved that
Chapter 7 Solutions
Precalculus with Limits: A Graphing Approach
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