Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Let 
, where 
is a variable coefficient and 
. Then the value of 
such that 
touches 
is (where [ ⋅ ] represents greatest integer function) 
.
Text Solution
Verified by ExpertsThe correct answer is:
5
(5)
and 
can only intersect on the line 
and, therefore, 
must be tangent at the common point of tangency. Hence,
This equation must have equal roots. Therefore,
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