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Mathematics
Mathematics
Problem
Let
f
(
x
)
=
x
2
cos
x
f(x)=x^{2}\cos x
f
(
x
)
=
x
2
cos
x
. Determine
f
′
(
π
2
)
f'\big(\dfrac{\pi}{2}\big)
f
′
(
2
π
)
. a)
0
0
0
b)
−
π
2
4
-\dfrac{\pi^{2}}{4}
−
4
π
2
c)
−
π
2
-\dfrac{\pi}{2}
−
2
π
d)
π
2
4
\dfrac{\pi^{2}}{4}
4
π
2
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