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Type: Posts; User: gspease839

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by gspease839
Replies
3
Views
492

### Re: help with eigenvectors please

im not sure how to solve this on paper either.

by gspease839
Replies
3
Views
492

okay im doing this for school. i need to calculate the unti length eigenvectors using the eigenvalues. ive calculated the eigenvalues for my matrix which are as follows:

matrix:...
3. ## Thread: finding unit length eigenvectors help

by gspease839
Replies
1
Views
593

### finding unit length eigenvectors help

okay im doing this for school. i need to calculate the unti length eigenvectors using the eigenvalues. ive calculated the eigenvalues for my matrix which are as follows:

matrix:...

by gspease839
Replies
5
Views
348

the class we are extending from is indeed long for some odd reason. thats called from two classes im developing. i understand what you are talking about how its hard for you to go on what i have....

by gspease839
Replies
5
Views
348

to make it short my list contains 1,2,3,4,5 nodes. this method is being called in main as contains(list.3); is 3 is in the list which it is then it will print out true. if 3 is not the it will print...

by gspease839
Replies
5
Views
348

i have a boolean method i must right. imputing the number and if number doesnt exist return false otherwise return true. this is what i have so far.

public boolean contains(T x)

{

...
7. ## Thread: condition number? what is it?

by gspease839
Replies
2
Views
740

### condition number? what is it?

im instructed to calculate the condition number. according to my slides is is calculated by ||A|| ||A^-1|| = condition number. what exactly is this? absolute matrix A times absolute inverse matrix...
8. ## Thread: condition number help?

by gspease839
Replies
4
Views
836

### help with matrix condition number

im instructed to calculate the condition number. according to my slides is is calculated by ||A|| ||A^-1|| = condition number. what exactly is this? absolute matrix A times absolute inverse matrix A??
9. ## Thread: condition number help?

by gspease839
Replies
4
Views
836

### condition number help?

im instructed to calculate the condition number. according to my slides is is calculated by ||A|| ||A^-1|| = condition number. what exactly is this? absolute matrix A times absolute inverse matrix A??
10. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

i had to keep j isolated but i was able to remove i and j
11. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

i have to have this project turned in tonight. i got to get this part, im stuck with what to do. can anyone please tell me what im doing wrong and fix the problem. its a outofboundsException at...
12. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

i took the variables out. im still getting the runtimeexception for b[i][j] = b[i][j] / pivot;
13. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

can you show me where i should put them. im trying man. im not sure what else to do in order to make this work
14. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

sorry guys heres the code again:

public static double[][] GaussianEliminverse(double[][] A,int B)
{
double[][] b = new double[B][B];
for (int row = 0; row < B; row++) {...
15. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 3
at matrix.GaussianEliminverse(matrix.java:2387)
at matrix.main(matrix.java:2048)

on: b[i][j] = b[i][j] / pivot;

...
16. ## Thread: need help solving Gaussian method for inverse

by gspease839
Replies
1
Views
438

### need help solving Gaussian method for inverse

i got some code but its not working or compiling. i need to use this code to find inverse of any size matrix. specific help would be appreciated. here is my code:

public static double[][]...
17. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

ok having mad difficulty but heres some code: its not compiling can i get some help?

public static double[][] GaussianEliminverse(double[][] A,int B)
{
double[][] b = new...
18. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

whats been troubling me the most is being able to derive a method for this. ill take a look at what you sent me

--- Update ---

so the identity matrix used is a whole new matrix? so starting...
19. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

sorry dude your stumping me. basically this is where im at. i got to find an inverse of a pre determined 8 x 8 matrix. this is all lol. i aint got the slightest clue on how to do this.
20. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

i believe its finding the adjoint of the matrix divided by determinant. idk man. i know ive been checking with software on different websites. ive been working at this for days.
21. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### Re: java help with inversing matrices

im sorry im a little confused on what your asking. the method i have above only works for a 2x2 matrix. the matrix im working on now is an 8x8. i need to find the inverse of that (8x8). ive done some...
22. ## Thread: java help with inversing matrices

by gspease839
Replies
25
Views
3,810

### java help with inversing matrices

hey, ive got to find the inverse of an 8x8 matrix. i have only coded a 2x2 matrix method. i have no clue or idea how to do anything larger than a 2x2. help is greatly needed.

code:

public...
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