If m and M are respectively minimum and maximum values of f(x) = |2- |x||, −3 ≤ x ≤ 3, then
Correct Answer :
m = 0 and M = 2
Solution :
The correct option is m = 0 and M = 2.
Let us analyze the function defined on the closed interval to find its minimum value () and maximum value ().
Step 1: Understand the absolute value components
The variable lies in the interval . Therefore, the absolute value ranges from a minimum of 0 to a maximum of 3:
Step 2: Find the minimum value ()
Because is defined as an absolute value expression, , its value can never be negative. Thus, the absolute minimum possible value for is 0.
This minimum value of 0 is achieved when the inner term is equal to 0:
Since lie within the given interval , we have:
Step 3: Find the maximum value ()
Let us evaluate at the critical points and the boundaries of the interval :
1. At (where is minimized):
2. At the boundaries (where is maximized):
3. At the points where the function is zero, :
Comparing these values, the maximum value of on the interval is:
Conclusion:
The minimum value is and the maximum value is .
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