Question

Math question

Answer 1

the first derivative of your function, is:
\[f'\left( x \right) = 3\left( {{x^2} - 4} \right)\]
and such first derivative is greater than zero when:
\[{x^2} - 4 > 0\]

Answer 2

what are the solution of that inequality?

Answer 3

solutions*

Answer 4

x^2 > 4 ??

Answer 5

the solution is the subsequent set \(S\):
\[S = \left\{ {x \in \mathbb{R}|x < - 2\;{\text{or}}\;x > 2} \right\}\]

Answer 6

are you sure?

Answer 7

Wait...no it is C???

Answer 8

correct!

Answer 9

Ah, thanks!

Answer 10

:)