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Type: Posts; User: gspease839

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  1. Replies
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    Re: help with eigenvectors please

    im not sure how to solve this on paper either.
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    help with eigenvectors please

    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:...
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    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:...
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    Re: boolean linkedlist help

    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....
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    Re: boolean linkedlist help

    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...
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    boolean linkedlist help

    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)

    {

    ...
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    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...
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    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. Replies
    4
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    449

    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??
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    Re: java help with inversing matrices

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

    i took the variables out. im still getting the runtimeexception for b[i][j] = b[i][j] / pivot;
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    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
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    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++) {...
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    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. 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[][]...
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    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...
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    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...
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    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.
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    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.
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    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...
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    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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