The set of values of ' 
' for which one negative and two positive roots of the equation 
are possible, is
Text Solution
Verified by ExpertsA
Let 
and 
Clearly, roots of the given equation are the absaissae of the points of intersection of the curves 
and 
.
The graphs of 
and 
are shown in Fig.
Clearly, the given equation will have two positive roots and one negative root, if 
intersects with 
at two points on the right side of 
-axis and one point on the left side of 
-axis. This is possible only when
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