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Mathematics 15 Online
OpenStudy (luigi0210):

Limits~

OpenStudy (luigi0210):

OpenStudy (austinl):

Looking at it, what do you think that it would be?

OpenStudy (austinl):

\(\large{\lim\limits{_{x\rightarrow -\infty}} (x^2+x^3)}\)

OpenStudy (luigi0210):

Hmm, -1?

OpenStudy (austinl):

Try substituting \(-\infty\) in.

OpenStudy (luigi0210):

Well that would give us 0.. but our professor said we can't do infinty-infinity xD

OpenStudy (austinl):

\(((-\infty)^2+(-\infty)^3)=-\infty+(-\infty)=-\infty\) At least that is my thought.

OpenStudy (luigi0210):

Well, Don't I feel like a fool now xD Thanks Austin!

OpenStudy (austinl):

No problem :)

OpenStudy (austinl):

Oh, and Wolfram agrees :)

OpenStudy (luigi0210):

That actually reminded me of "end behavior"

myininaya (myininaya):

\[\lim_{x \rightarrow -\infty}x^2(x+1)\] According to this product we have a positive times a negative so we will have a negative product for sure. As x gets negative large x^2(x+1) gets negative large.

OpenStudy (austinl):

Wait, I made a silly math error earlier, but you still get the idea :$

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