Evaluate 
(if it exists), where 
.
Given f(x) = 
To find 
To limit to exist we know 
…….(1)
Thus to find the limit using the concept 
……(2)
……..(3)
……(4)
…..(5)
From above equations
Thus the limit does not exist
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. Is it equal to 
.
.
does not exist.
and if 
, find the value of k.