|
function [z,y,wmax,xmax]=Condition(A)
[m,n]=size(A); % Get the dimensions of A
w=ones(m,1); % Start with initial guess eigenvalues
imax=60;
tol=10^-10;
for i=1:imax
[kk,k]=max(abs(w)); % Returns the indices of the maximum w values in vector k
z=w/w(k); % Normalize w with respect to maxw=w(k)
w=A*z; % Calculate w again
wmax=w(k); % z(k)=1
r=norm(wmax*z-w); % Use Euclidean form (norm(w,p) = sum(abs(w).^p)^(1/p))
final=[i,wmax,r,z'];
if r
end
B=inv(A);
% Get the dimensions of A
x=ones(m,1); % Start with initial guess eigenvalue
for i=1:imax
[kk,k]=max(abs(x)); % Returns the indices of the maximum w values in vector k
y=x/x(k); % Normalize w with respect to maxw=w(k)
x=B*y; % Calculate w again
xmax=x(k); % z(k)=1
r=norm(xmax*y-x); % Use Euclidean form (norm(w,p) = sum(abs(w).^p)^(1/p))
final=[i,xmax,r,y'];
if r
end
end
end
xmin=1/xmax
wmax
condition=wmax*xmax
And An erro occurs;
Error in ==> Condition at 2
[m,n]=size(A); % Get the dimensions of A
How can I correct it? 
|
|
|
|
|
Does it not give you any more details of the error?
I'm assuming this is being run in a script? Can you replicate the script step by step in the command window? - This might give you some more details about the problem when it pops up.
|
|
|
|
|
Write a MATLAB® function to calculate the condition number of a symmetric square matrix of any size by means of Eigenvalues:
§ The power method should be used to calculate the Eigenvalues.
§ The script (function) should give an error message if the matrix is not square and/or is not symmetric.
§ The result of the built-in MATLAB® function “cond” should be displayed in addition to the results of the power method.
For example:
function [condPower,condMatlab]=NameofFunction(A,…)
…
…
condPower=…;
condMatlab=cond(A);
fprintf(‘Condition of matrix calculated using the Power method is %5.2g and using cond(A) is %5.2g \n’, condPower,condMatlab);
......
.......
.......
This is my Project And I cannot Do it by myself.Please help me.
Mail Mail adress; weicell@yahoo.com
1. Write a MATLAB® script to solve the following Continuous Stirred Tank Reactor (CSTR) problem using Gauss-Siedel iteration. Five CSTR’s are connected in series. Find the exit concentration from each reactor.
Assumptions for the system are:
§
ki
Steady state system
§ First-order irreversible reaction in liquid phase AàB
§ No change in volume or density of liquid
§ Rate of disappearance of solute in reactor given by: Ri=VikiCi mol/h
Reactor 1
Reactor 2
Reactor 3
Reactor 4
Reactor 5
Vi (L)
100
150
75
40
80
ki (h-1)
0.1
0.2
0.3
0.5
0.3
Hints: First set up the material (mass) balance equations for each of the reactors
Remember: input-output-disappearance by reaction-accumulation=0, where accumulation will be zero for a steady state system.
You will have 5 equations and 5 unknown variables Ci, where i=1:5
Make sure the system of linear equations is diagonally dominant.
This is The Second one.PLease Help me I am n a hurry,
I have to send it to my instructor on sunday...
Please..  
|
|
|
|
|
|
weicell wrote: PLease Help me I am n a hurry
No wonder you are in a hurry.
Thanks but no thanks, I've done all the exams I intend to do.
Peter
"Until the invention of the computer, the machine gun was the device that enabled humans to make the most mistakes in the smallest amount of time."
|
|
|
|
|
Because I am tring to do this project about a week,But I cannot Do it..Just help me ,I appreciate that.
Why you say "You want us to do your mid-term exam for you??" ?
Is it a shame For me?
I don't think so , I'm just waiting for help..Because I AM desperate!
If I cannot send this to my instractor,She will gave me F-,Than I cannot graduate this year!!
This is UNfair. 
|
|
|
|
|
weicell wrote: If I cannot send this to my instractor,She will gave me F-,Than I cannot graduate this year!!
This is UNfair.
It sounds entirely fair to me. Why should you be allowed to graduate if you're not ready? If you haven't done sufficient preparation, that's your fault, not ours. No one is going to help you cheat and gain a qualification you don't deserve.
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
|
|
|
|
|
It is Fair HA??
I am studing in Chemical Engineering Department.!
I am not a student of Coding or Computer Engineering,This is 2.nd class course,And this year our instructor had changed and Last year we dont have to do such things like This!
So I am READY for CHEMICAL ENGINEERING! But not FOR Computer ENGINEERING! ok?
I am From TURKEY and in our COunrty ,They gave us Such stupid things like that,For example MATLAB.We use CHemcad.But not MATLAB!
Judging isvery easy than helping someone else?Am I Right?
If you help me doing this , I appriciate..
In my class,the other students gave money(About 50-100$) to a MATLAB programmer,and make them to do this project.Project made by a programmer.
But I am not RICH! So I cannot affor to pay 50$ for a project.
Now tell me,IS IT FAIR! If you think so,The world is changing FAST and Furious!
Anyway,I am tring to this until this Midnight.(00:00)
Just waiting ,and tring to do this....
|
|
|
|
|
weicell wrote: In my class,the other students gave money(About 50-100$) to a MATLAB programmer,and make them to do this project.Project made by a programmer.
If you can prove they cheated, turn them in.
Doing my part to piss off the religious right.
|
|
|
|
|
Tim Craig wrote: If you can prove they cheated, turn them in.
No kidding. I wonder if he ever did turn the fellow students in. First night of my class, people learn what can happen with academic dishonesty. It is pretty much summed up, as a don't even go there kind of thing.
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
|
|
|
|
|
Paul Conrad wrote: I wonder if he ever did turn the fellow students in.
Wow, are you having a slow day to get back this far?  I don't know if he turned his buddies in or not but I turned him in. He left enough bread crumbs that I tracked down is professor in Turkey and sent her an e-mail showing his activity here. She replied so I know she saw it but her response wasn't as satisfying as I'd hoped. Something to the effect that she'd teach them better so they didn't have to cheat.
If you don't have the data, you're just another a**hole with an opinion.
|
|
|
|
|
Yeah, I found myself traversing pretty far down some of the forums today 
Tim Craig wrote: He left enough bread crumbs that I tracked down is professor in Turkey and sent her an e-mail showing his activity here.
Wow.
Tim Craig wrote: Something to the effect that she'd teach them better so they didn't have to cheat.
Okay, she better herself, but should have done something about the cheating. I remember when doing my Master's work, this guy was in a class before my class, who got caught cheating and was really upset that the teacher was pretty much academically nuking the guy.
Luckily, all of my students from my classes I've taught, none have inquired anyone around here to do their assignments for them. I do recommend to student this site.
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
|
|
|
|
|
weicell wrote: They gave us Such stupid things like that,For example MATLAB.We use CHemcad.But not MATLAB!
Wow, this is pretty ignorant of you. When you get out into the real world and find that some places actually use MATLAB instead of CHEMLAB, you're going to be pretty screwed, aren't you?
|
|
|
|
|
weicell wrote: It is Fair HA??
I am studing in Chemical Engineering Department.!
I am not a student of Coding or Computer Engineering,This is 2.nd class course,And this year our instructor had changed and Last year we dont have to do such things like This!
ahhh, the old inter-disciplinary excuse. I hear it quite often, I even used it myself once. Look, we can all understand that you don't know this. What you don't seem to understand is that maybe there is a reason you SHOULD know this. MATLAB is not "computer programming" as it is to most of us here. Yes, it is a form of programming, per se. But MATLAB is a tool used by many inter-disciplinary engineering departments. I know Civil engineers who use matlab to check stresses, I know chemical engineers who test reaction points and many things beyond me, I know physicists who use it for their work, mathematicians who use it for theirs, but far fewer computer engineers. Why? because the computer engineers have many more tools. They too have their tools, but MATLAB is primarily a tool for general engineering, not computer engineering.
When you get into the market you will have to use "a tool" to verify your work, or test a theory, or many things. That tool will often be MATLAB. It is worth your time to learn it. You say you are poor, then do yourself a favor, learn MATLAB and then all the others can pay you $50-$100 to do their work.
I was young once, I learned the same lesson. I was furious for having to learn calculus. I was a computer programmer, my computer would do all that for me. Idiot that I was. Now I am that programmer who has to teach the computers calculus and fluid dynamics. If you don't like the school's demands, change schools, or change degrees. Otherwise, buckle down and learn what you are offered. In the end it will make you smarter, and higher demand than those other idiots paying for someone to do their work. Be different, be better, LEARN IT!
_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
|
|
|
|
|
BTW, your instructor wasn't very happy when she read this.
Doing my part to piss off the religious right.
|
|
|
|
|
weicell wrote: So I am READY for CHEMICAL ENGINEERING! But not FOR Computer ENGINEERING! ok?
I have a degree in Computer Science, but I also had to take courses in Communication, History, and Humanities. I, not someone else, had to study those right along with my major. Why should you think you are so different?
"Love people and use things, not love things and use people." - Unknown
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
|
|
|
|
|
AND ALSO,
They(my CLASSMATES)deserve A+ because of their money,I DO not Deserve ,BECAUSE I am POOR!!!
BLA BLa BLA!
|
|
|
|
|
So why don't your study MATHLAB? You can earn money in your Country with such knowledge thus becoming a rich man.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
|
|
|
|
|
Because , This year they begin to study Matlab to us.(ABout 1 month)
So We cannot Study MATLAB as well.
Matlab is 1 cemester lesson in my School.
Any way,If any one help me,I appriciate.
Any one ,who want to help me do not have do all the script,If he/she shows me the way to write this script,It will be necessary for me.
It is not important me to be rich ,I want to be JUSt Happy,I am 24 ,I am not rich,poor in deed.But Until this week I am Happy,But this script makes me VERY sad.
Anyway,my mail adress is weicell@yahoo.com
you can contact me her or via mail.
THANK you .
|
|
|
|
|
weicell wrote: I am 24
24 years old and you can't do your own homework. Don't you think it's time you grew up and acted like an adult?
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
|
|
|
|
|
Never!! 
[ My Blog] "Visual studio desperately needs some performance improvements. It is sometimes almost as slow as eclipse." - Rüdiger Klaehn "Real men use mspaint for writing code and notepad for designing graphics." - Anna-Jayne Metcalfe
|
|
|
|
|
cp9876 wrote: I've done all the exams I intend to do.
Same here. Just happened to get down this far in the math forum today 
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
|
|
|
|
|
c=zeros(5,1);
for i=1:1000
c1=100/110;
c(1,1)=c1;
c2=(100*c(1,1)-5*c(3,1))/130;
c(2,1)=c2;
c3=(100*c(2,1)+5*c(4,1))/120;
c(3,1)=c3;
c4=(95*c(3,1)+10*c(5,1))/120;
c(4,1)=c4;
c5=(95*c(4,1)/124);
c(5,1)=c5;
end
I have Wrote This Script For The Second Question(First Quetsion in the Web site)
Just tell me That,Is it true or not?
How can I edit this?
I need Help ,Why Dont you help me???
|
|
|
|
|
weicell wrote: hat,Is it true or not?
What?
weicell wrote: How can I edit this?
With a text editor, I suppose.
weicell wrote: I need Help ,Why Dont you help me???
Have you read forum guidelines?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
|
|
|
|
|
I ask That,The script That I wrote is true or not?
Is it editable?And Which changes can I make in the script?
And I wrote Another;
But there is a problem Take a look at this;
function [z,y,wmax,xmax]=Condition(A)
[m,n]=size(A); % Get the dimensions of A
w=ones(m,1); % Start with initial guess eigenvalues
imax=60;
tol=10^-10;
for i=1:imax
[kk,k]=max(abs(w)); % Returns the indices of the maximum w values in vector k
z=w/w(k); % Normalize w with respect to maxw=w(k)
w=A*z; % Calculate w again
wmax=w(k); % z(k)=1
r=norm(wmax*z-w); % Use Euclidean form (norm(w,p) = sum(abs(w).^p)^(1/p))
final=[i,wmax,r,z'];
if r<tol, break="">
end
B=inv(A);
% Get the dimensions of A
x=ones(m,1); % Start with initial guess eigenvalue
for i=1:imax
[kk,k]=max(abs(x)); % Returns the indices of the maximum w values in vector k
y=x/x(k); % Normalize w with respect to maxw=w(k)
x=B*y; % Calculate w again
xmax=x(k); % z(k)=1
r=norm(xmax*y-x); % Use Euclidean form (norm(w,p) = sum(abs(w).^p)^(1/p))
final=[i,xmax,r,y'];
if r<tol, break<br="" mode="hold"> end
end
end
xmin=1/xmax
wmax
condition=wmax*xmax
And An erro occurs;
Error in ==> Condition at 2
[m,n]=size(A); % Get the dimensions of A
How can I correct it?
>>
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
