Question
Find the absolute maximum value and the absolute minimum value of 
Solution
The function 
is differentiable for all x in 
and 
Now, 
i.e., when (x - 5) (x - 1) = 0
i.e., when x = 1 or x = 5
But only 
Now, 
Hence absolute maximum value is 
and absolute minimum value is 
. These are attained at 1 and 4 respectively.
