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Mathematics
Problem
Let
p
(
x
)
=
a
x
3
+
b
x
+
c
p(x) = ax^{3} + bx + c
p
(
x
)
=
a
x
3
+
b
x
+
c
, where
a
a
a
,
b
b
b
,
c
c
c
are constants. Which of the following equals
p
′
(
x
)
p'(x)
p
′
(
x
)
? a)
3
a
x
2
+
b
x
3ax^{2} + bx
3
a
x
2
+
b
x
b)
a
x
2
+
b
ax^{2} + b
a
x
2
+
b
c)
3
a
x
2
+
b
3ax^{2} + b
3
a
x
2
+
b
d)
3
a
x
3
+
b
3ax^{3} + b
3
a
x
3
+
b
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