find the lim as x approaches positive and negative infinity

(3x^3 - x +1) / (x + 3)

can you explain the answer

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- Sep 29th 2012, 08:04 AMubhuttoNeed LImit help!!!!!!!!!!
find the lim as x approaches positive and negative infinity

(3x^3 - x +1) / (x + 3)

can you explain the answer - Sep 29th 2012, 08:07 AMProve ItRe: Need LImit help!!!!!!!!!!
- Sep 29th 2012, 08:11 AMubhuttoRe: Need LImit help!!!!!!!!!!
thanks

can you also show me how to get the horizontal asymptote of the graph - Sep 29th 2012, 12:23 PMHallsofIvyRe: Need LImit help!!!!!!!!!!
Another way to do this to go ahead and divide: . As x goes to either + or - infinity, that last fraction goes to 0 so you only need to consider what happens to determines the limit.

If you know what a "horizontal asymptote" is, you should realize that knowing the limit tells you everything you need to know about the horizontal asymptotes.