Recent content by rroy81

That's just it...I am not to sure how to tackle the problem. I know the answer is 31374 kg. How do I get is what I need help with. Thanks!

I need help in solving the following solution. The Gompertz model has been used to model population growth. dy/dt = -ryln(y/k), where r = 0.67 per year, K = 36500 kg, Use the Gompertz model to find the predicted value of y(4) . TIA.

P0 really is meant to say P subscript 0. Didn't know how to do this in here. Couldn't Copy & paste from word either.

SteveL27, yes this is exactly where I am stuck. I do believe I understand the question however, I am having a very difficult time put words on paper that explains it. thrill3rnit3, I will attempt what I think..here goes.. I believe that "let P be any point in S such that (P-P0)/2 <...

SteveL27, I have attached a word doc with picture.

firstly: THANK YOU all for taking the time and trying to point me in the right direction. Now, I am sitting here pondering on this problems "Open Set" problems. I believe the question I should be asking is whether someone can explain to me Open Sets using δ & ε? with examples and...

Ok guys, my apologies. I did more research on this problem set and this is exactly what is given. Is the set S = {P=(x,y): |y| > 0} open or not? {P=(x,y): |y| > 0} = {P=(x,y): (y > 0) or (y <0)} = {P=(x,y):y ≠ 0} I need to show whether this is a open set or not? Hope this iis more...

So the definition or what I understand a "Open Set" is; Any arbitrary point P within a set must be < than the δ or radius in order to satisfy as an "Open Set". Was this what you are asking? I am simply confused and lost on how one would write a proof and hence I need a better explanation...

So the problem given is: Is the set S = {P=(x,y): |y| > 0} open or not? I want to know how do I tackle or decipher this?...I have spent a good 2 days researching and reviewing the textbook example and I am simply not getting it.

Hello All, I am finding the hardest time in understanding how to work δ & ε Open Set Problems? Can someone please explain this approach to me? Thanks in Advance

I like Serena, My understanding to cross product is using the matrix, am I right? (ith, jth and kth terms) and as I have given the terms A=(a1, a2, a3) B=(b1, b2, b3) and so on..than to solve the cross product. I simply took the crossed out the first column and row and than did the cross...

So turns out the instructor had typo in the problem. it should be (A x B) . (C x D) = (A . C) (B . D) - (A . D) (B . C) The way I started was let A = {a1, a2, a3 } and so on for the remaining (B, C, D). I assume it is a matrice and will proceed as a dot product. Than I am unsure if this right...

Proof using lagrange! Homework Statement (A x B) . (C x D) = (A . B) (C . D) - (A . D) (B . C) Homework Equations This is all that's given..I am sort of lost on how to proof this. Spent 4hrs + The Attempt at a Solution Completely lost and don't know where to start