limit -x^5 + x - 1 as x goes to infinity Can I add infinity? -(infinity)^5 + infinity - 1 = -infinity + infinity (is it now positive or negative infinity?)
Follow Math Help Forum on Facebook and Google+
Hey joshuaa. Have you studied limits?
yes but i am confused cuz the dr. says infinity - infinity is indeterminate. so will i add them or i cannot?
Originally Posted by joshuaa limit -x^5 + x - 1 as x goes to infinity Can I add infinity? -(infinity)^5 + infinity - 1 = -infinity + infinity (is it now positive or negative infinity?) You can't add infinities...infinity is not a number. But we can still do a comparison. Which is bigger for large numbers (not infinite ones), or x? -Dan
Originally Posted by topsquark You can't add infinities...infinity is not a number. But we can still do a comparison. Which is bigger for large numbers (not infinite ones), or x? Better is to write Or (where ).
Last edited by Archie; Jan 10th 2017 at 08:58 PM.
From precalculus, recall the end behavior of an odd-degree polynomial with a negative leading coefficient.
thanks guys
View Tag Cloud