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Mathematics
Problem
Number of points where the function
f
(
x
)
=
(
x
2
−
1
)
∣
x
2
−
x
−
2
∣
+
sin
(
∣
x
∣
)
f(x) = (x^2 - 1)|x^2 - x - 2| + \sin(|x|)
f
(
x
)
=
(
x
2
−
1
)
∣
x
2
−
x
−
2∣
+
sin
(
∣
x
∣
)
is not differentiable, is a. 0 b. 1 c. 2 d. 3
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