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Mathematics
Mathematics
Problem
Evaluate
d
2
d
x
2
(
sec
x
)
\displaystyle \frac{d^{2}}{dx^{2}}(\sec x)
d
x
2
d
2
(
sec
x
)
at
x
=
π
3
x=\dfrac{\pi}{3}
x
=
3
π
.
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