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Mathematics
Mathematics
Problem
Let
g
(
x
)
=
3
x
+
4
cos
x
g(x)=\dfrac{3x+4}{\cos x}
g
(
x
)
=
cos
x
3
x
+
4
. a. (i) Find
g
′
(
x
)
g'(x)
g
′
(
x
)
. b. (ii) Hence, calculate
g
′
(
π
3
)
g'\!\left(\dfrac{\pi}{3}\right)
g
′
(
3
π
)
correct to two decimal places.
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