Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.3
\[\LARGE \int_{1}^{0}~\frac{e^{1/x}}{x^3}~dx\]
 one month ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.1
sub u = 1/x
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
try letting u=1/x so x=1/u
 one month ago

dan815 Group TitleBest ResponseYou've already chosen the best response.1
then do parts
 one month ago

Joshyboi25tolyfe Group TitleBest ResponseYou've already chosen the best response.0
Guys guys... In the eyes of god, mathematics doesn't exist! Now, let's all hold hands and pray.
 one month ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.1
yeah u can't avoid parts i think
 one month ago

dan815 Group TitleBest ResponseYou've already chosen the best response.1
mathematics is a language and God gave us languages
 one month ago

dan815 Group TitleBest ResponseYou've already chosen the best response.1
so shut your 3.14 hole
 one month ago

Joshyboi25tolyfe Group TitleBest ResponseYou've already chosen the best response.0
LOLOL ^
 one month ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.3
\[\LARGE \int_{1}^{0}~\frac{e^{1/x}}{x^3}~dx\] \[\LARGE =\int_{1}^{0}~\frac{1}{x}~e^{1/x}~\frac{1}{x^2}~dx\] \(\Large u=1/x\) and \(\Large du=\frac{1}{x^2}dx\) \[\LARGE \int_{1}^{0}~ue^udu\] And then use parts like dan said?
 one month ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.3
*\[\LARGE \int_{1}^{0}~ue^udu\]
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
you should have an improper integral
 one month ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.3
\[\LARGE \LARGE \lim_{t \rightarrow 0} \int_{1}^{t}~ue^udu~\]?
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
of x is between 1 and 0 and u=1/x dw:1402252341171:dw
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
as we approach 0 from the left what is u getting approaching?
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
dw:1402252495152:dw
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
we are looking to the left of 0 because our interval is 1 to 0 none of our values occur to the right of 0 so we won't bother to look there
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
i'm asking him to evaluate the following: \[\lim_{x \rightarrow 0^}\frac{1}{x}\]
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
lugi0210 just read the graph above as our x values get near the 0 number (from the left) what do your u values (or if you want call them y values) do?
 one month ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.3
\(\Large \infty\)?
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
right so i'm going to change one thing in your lim from earlier \[\LARGE \LARGE \lim_{t \rightarrow  \infty} \int\limits_{1}^{t}~ue^udu~ \]
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
i think there should be a negative in front of that
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
\[ \LARGE \LARGE \lim_{t \rightarrow  \infty} \int\limits\limits_{1}^{t}~ue^udu~\]
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
you know from the du=1/x^2 dx thing
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
now use integration by parts then evaluate the limit
 one month ago

Luigi0210 Group TitleBest ResponseYou've already chosen the best response.3
Alright, I see it now, it was the limits that was throwing me off >_< Thank you myininaya :)
 one month ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.1
if u feel lazy about changing the bounds, you may try below : 1) Find the indefinite integral first 2) plugin the bounds
 one month ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
@Luigi0210 did you get it?
 one month ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.