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| PAGE: 139 | SET: Exercises | PROBLEM: 45 |
Relation between 
and 
is 
.
Where is average rate during the first leg of trip.
is average rate diruing the return trip.
(a).
There is a vertical asymptote at the real zero of the denominator 
.
The ratio of the leading coefficients of the numerator and denominator, because the degrees of the polynomials are equal.
There is a horizantal asymptote at the numerator 
.
The function is 
.
Graph :
Draw the coordinates.
Graph the function .
(b).
Evaluate the function for each value of 
to determine 
.
.
When 
, 
.
When 
, 
.
When 
, 
.
When 
,
.
When 
,
.
When 
,
.
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(c).
is not reasonable for this situation.
Reasoning :
.
When 
,
If 
, then will be negative and negative resistance is not possible.
(a). Graph of the function .
(b).
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(c). If , then will be negative.Negative resistance is not possible.
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