vera_ewing
  • vera_ewing
Math question
Mathematics
chestercat
  • chestercat
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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vera_ewing
  • vera_ewing
carolinar7
  • carolinar7
What do you think?
Michele_Laino
  • Michele_Laino
we can rewrite your function as below: \[f\left( x \right) = \left( {3{x^2}} \right) \cdot x\] now \(3x^2\) is always positive, for every value of \(x\) (negaitve or positive) So, what can you conclude?

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Michele_Laino
  • Michele_Laino
negative*
Michele_Laino
  • Michele_Laino
are you sure? if x goes to -infinity, then \(3x^2 \cdot x\) goes to...?
Michele_Laino
  • Michele_Laino
I'm sorry, since if x goes to +infinity, then \(3x^2 \cdot x\) goes to +infinity
Michele_Laino
  • Michele_Laino
correct!
vera_ewing
  • vera_ewing
Ah, thank you Michele!
Michele_Laino
  • Michele_Laino
:)

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