Question

Let
S = {t e R:f(x) = x - 7. (el #1 - 1) sin | x |
is not differentiable at t}. Then the set S is
equal to
(JEE (Main) 2018]
(A) {0}
(B) {n}
(C) {0, T}
(D) 6 (an empty set)​

Answer 1

Answer:

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