http://www.totallyfreemath.com/
While you decide, here's a free algebra book. The advantage to this is that it also provides solutions, so if you ever fill the need to check your work, this may help, just don't get dependent on it.
You know what, I think you just confirmed that my brain was fried because as I reworked it, it became obvious -_-. Now I feel a bit like an idiot. I'll take this as a sign I need sleep.
Homework Statement
A person walks in a straight line from point A to point B at a constant speed of 5.00m/s and walks back from point b to point a, with a constant speed at 3.00 m/s. What is the average speed of the entire trip.Homework Equations
The Attempt at a Solution
First, I know how to...
In the military, when we usually see a restricted area such as an Arms room or a place where intel people work, there's usually a sign that says:
U.S. ARMY RESTRICTED AREA
WARNING
This reservation has been declared a restricted area by authority of Commanding General, in accordance with...
No idea what purpose a shield would really have besides make us use an extra hand which believe it or not will not be possible. As for the pack, it depends which pack you mean. The large MOLLE ruck we usually ditch if assaulting an objective but carry if moving out of a kill box simply because...
I tend to advise people from talking all math and science courses. Even if you are mentally capable of doing well in all said classes at once, I think it's a good idea to spend some time to expand from your field, take a required elective (or something that interest you) just for the occasional...
http://en.wikipedia.org/wiki/Combinatorics_and_physics
I wouldn't say it's useless, I just doubt you'll learn enough in one class to really make it useful per se. Nevertheless, I personally find it interesting and it's really quite neat how you can apply a lot of ideas from Combinatorics to a...
When it comes to studying, it isn't so much about the length you studied but how effective your studying is. There were times when I cold sit and study 6 hours straight and feel as if my understanding of the concepts only grew by maybe a milometer.
For me personally, I've found that the best...
Honestly, I see what you're trying to do, focus on the sciences because it's your career path, but it isn't necessary to be honest. I got into a pretty good school (many moons ago) without even taking an AP physics class of any sort and my major was Mathematics and Physics. Nevertheless, on a...
Then no, if it is required for your major, you will have to take and face the beast eventually. I'm sure you could drop and just take it again, but then again to me that sounds like a waste of money. It's still somewhat early in the semester and there is time for you to take the time needed to...
Which brings me to this point. Even if you find the teacher's methods awful and hate the class completely, there's another important life lesson in there. Sometimes, you just have to put up with a bad situation in order for a positive outcome. I recall one time my squad was told to take...
In my opinion, it seems to be a good lesson on life. While you can argue that the correct answer is all that matters. I would also like to answer that following instructions also matter. In any work place, it isn't uncommon for a person to have to follow a certain way of doing things.
For...
Well, as far as I know the integrating factor should end up being ln(1-x^2). Simply integrate -2x/(1-x^2). Not sure why they used the x there in the upper limit, but I've never seen it like that. Try it my way and I'm sure you'll get the same result.
I think you might be over thinking this.
First, S-L are in the form -d/dx[p(x)dy/dx] +q(x)y = whatever
The Legendre equation is
(1-x^2)d^2/dx^2'-2xdy/dx+n(n+1)y=0
D[1-x^2] = -2x
So we already have the S-L you are looking for:
d/dx[(1-x^2)dy/dx]+n(n+1)y=0
You'll have to do the whole...