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Homework 2, due September 12, 2007.
Posted: Fri Sep 07, 2007 3:40 pm
by goodwine
Reading assignment: Chapter 2.
Homework assignment: problems 2.1-2.11 except 2.4 and 2.8.
If you want to start the homework before Monday afternoon, you will have to base a lot of it on reading the course text.
mistake
Posted: Sun Sep 09, 2007 11:34 pm
by ascott5
Nevermind
mistake
Posted: Tue Sep 11, 2007 8:58 pm
by aoconno5
In problem 2.2 for the homework it reads:
1. If x(0) denote the amount present
Should it be denotes? I didn't know where to post this because it's not really a homework question.
Re: mistake
Posted: Tue Sep 11, 2007 10:08 pm
by goodwine
aoconno5 wrote:In problem 2.2 for the homework it reads:
1. If x(0) denote the amount present
Should it be denotes? I didn't know where to post this because it's not really a homework question.
Yes, that's right, it should be "denotes."
Problem 2.10
Posted: Tue Sep 11, 2007 10:16 pm
by goodwine
Someone asked me:
I was wondering if you could give me a clue as to start problem 2.10. I'm not
sure how to approach the start. Should I begin with a general separable
equation and then show that it is also exact? Thank you.
Since a general separable equation is of the form that allows us to put all the t's on one side and all the x's on the other, we can write it in the form
f(t) dt = g(x) dx
or
g(x) dx/dt - f(t) = 0.
You should be able to related the g(x) and f(t) function to the theorem that states when an equation is exact.