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| PAGE: 609 | SET: Exercises | PROBLEM: 11 |
The differential equation is 
.
The differential equation 
is positve for any values of 
and 
.
Observe the graph,
The slope of the tangent line(shown in red color) is negative, hence is negative.
Thus, the graph does not indicates the solution of the differential equation.
(b)
Substitute 
in .
Thus, slope is zero.
Slope of the function is zero when the maxima and minima at the point where slope of the function is zero.
Observe the graph,
At 
slope of the graph is not equal to zero, since no maxima or minima exist at .
Thus, the graph does not indicates the solution of the differential equation.
Neihter of the graphs indicate the solution of the differential equation.
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