Friday
October 31, 2014

Homework Help: Calculus

Posted by W on Monday, November 21, 2011 at 12:12am.

How do I integrate (e^(3/x))/(x^2) from 1 to 3. I understand how and why I need to do u-substitution, with u=3/x and so dx=(-3 du)/x^2. After plugging (-3 du)/x^2 in for dx, I get a really messy problem that I don't know how to finish. Can you please explain the step?
Thanks for your help!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

calculus-integration! - should i use substitution?? if yes how should should i ...
Integrating Factors - I've been working on this hw problem for a while now, but ...
Integral calculus - Please do help solve the followings 1) Integrate e^4 dx 2) ...
calculus - integrate 3/25+4x^3....use 2x=5tanΦ as a substitution
calculus - How would you integrate tan5xdx ? Thanks in advance. Can you use u ...
Calculus - How to integrate dx/(4-5 sin x) using t-substitution method(i.e. ...
Calculus - Can someone help me to integrate by substitution the indefinite ...
Calculus II - How do you integrate the function -- > sinx (4^cosx) from 0 to ...
calculus - integrate x*(x+1)^9dx I believe the substitution method is the proper...
calculus - Integrate x/(x^2 + 4) dx via trig substitution and by u=x^2+4 ...

Search
Members