Determinants


by sapiental
Tags: determinants
sapiental
sapiental is offline
#1
Nov5-07, 09:49 PM
P: 120
1. The problem statement, all variables and given/known data

Hi, could someone please confirm my results. I just put my answers because the procedure is so long. let me know if you get the same results.

1) Wronskian(e^x, e^-x, sinh(x)) = 0

2) Wronskian(cos(ln(x)), sin(ln(x)) = 1/x * [cos^2(ln(x)) + sin^2(ln(x))] = 1/x

thanks in advance
Phys.Org News Partner Science news on Phys.org
Cougars' diverse diet helped them survive the Pleistocene mass extinction
Cyber risks can cause disruption on scale of 2008 crisis, study says
Mantis shrimp stronger than airplanes
Dick
Dick is offline
#2
Nov5-07, 10:40 PM
Sci Advisor
HW Helper
Thanks
P: 25,173
The one is super easy. sinh(x) is a linear combination of e^x and e^(-x). So 0. You don't even have to compute anything. And you are right on the second one as well.


Register to reply

Related Discussions
What are determinants useful for? General Math 9
Determinants Calculus & Beyond Homework 1
Determinants Calculus & Beyond Homework 5
more determinants! Calculus & Beyond Homework 7
determinants Calculus & Beyond Homework 10