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  4. Iff(x)= |x| + | sin x| for x ∈ (-(π/2),(π/2)) then its left hand derivative at * = 0 is

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Q. If$f(x)= |x| + | sin\, x| for x \in \left(-\frac{\pi}{2},\frac{\pi}{2}\right) $then its left hand derivative at * = 0 is

Solution:

Correct answer is (c) -2