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Derivatives
hard
0:00.0
Given
f
(
x
)
=
cos
(
x
2
)
f(x) = \cos(x^2)
f
(
x
)
=
cos
(
x
2
)
, calculate
f
′
′
(
0
)
f''(0)
f
′′
(
0
)
.
A
−
2
-2
−
2
B
0
0
0
C
2
2
2
D
1
1
1
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