553 Topics
For my Optics course, we need to write a program that will take a certain input, perform a matrix computation, and output a system matrix. The program also needs to check for nonsense input and be able to "be adjusted" for any amount of matrix elements. I took a course …
I am trying to create a graph from a 2d matrix of booleans. When the index [i][j] == 1, I need to create a link or edge from node[i] to node[j]. I am doing some thing wrong. I have created a class file with a struct node and some basic …
I have a variable x which varies from -160 to 160 through steps of 10. `x = -160:10:160;` I have a matrix T1 which is of the form ` cos(x) 0 +sin(x) 0.00; sin(x) 0 -cos(x) 0.00; 0.0000 1 0.00000 0.67; 0.0000 0 0.00000 1.00 ` How can that be …
I need to multiply 2 matrices together using threads to computer each element. Ive been working on it myself but Im stuck at this point and Im getting an error. Here is the code I have. Can someone help in explaining what is wrong here or how to correct it? …
you will write a program to solve linear equations given in upper triangular form. There are N equations, and N unknowns. This is equavalent to the following matrix multiplication [A][X]=[B], where A is a square matrix (N by N), X and B are vectors with size N. Back Substitution: First, …
I'm writing a program to multiply two 4-bit number using add and shift method in C language. The code is as follows: #include <stdio.h> #include <math.h> int main() { int d,p=0, y=1010, x=1101, c, i; for(i=0;i<=3;i++) { c = x % 10; y = y << i; d = c*y; …
What I want to do is to take a 2d int array and use it to create a Matrix (a class I will be defining) which will effectively wrap all the values of the 2d array together so that I can perform matrix multiplication for coordinate translation. I am rather …
I mainly need help with creating the 3 by 4 matrix (part 3 of the assignment) as i am confused as how i would create it. However this is the entire assignment: 1. Write a function that returns the sum of all the elements in a specified column in a …
Hey guys,I'm new,but I study C programming language and I have this awfull problem. I have make a matrix A[n][n],in which n is an odd positive number(of course),and the matrix must "unwrap" itself with the number 1 in the middle then 2 to the top,then clockwise 3,4,5,..etc,until it wraps the …
Hello all... I want the multiplication of the same matrix but in third, forth, fifth... degree. I have made the C++ program and this is the code: #include <stdio.h> #include <stdlib.h> #include <iostream> using namespace std; #define WIDTH 3 #define HEIGHT 3 void main(){ int a[HEIGHT][WIDTH]; int b[HEIGHT][WIDTH]; int n; …
Hello, I don't want to look like I am following other forums, but, wouldn't it be a good idea for users (with a certain amount of rep) to have basic moderation tools, or, atleast the ability to edit posts by users and: 1) The person who posted can accept this …
How I will multiply this matrix by using for loop ? #include<iostream> using namespace std; void mat_mul_2d(int mat_out_2d[][2], int mat_in1_2d[][2], int mat_in2_2d[][2]) { mat_out_2d[0][0]=mat_in1_2d[0][0]*mat_in2_2d[0][0]+mat_in1_2d[0][1]*mat_in2_2d[1][0]; mat_out_2d[1][1]=mat_in1_2d[0][0]*mat_in2_2d[0][1]+mat_in1_2d[0][1]*mat_in2_2d[1][1]; mat_out_2d[2][2]=mat_in1_2d[1][0]*mat_in2_2d[0][0]+mat_in1_2d[1][1]*mat_in2_2d[1][0]; mat_out_2d[3][3]=mat_in1_2d[1][0]*mat_in2_2d[0][1]+mat_in1_2d[1][1]*mat_in2_2d[1][1]; } int main() { int mat_in1_2d[2][2] = {{1, 2},{3, 4}}; / int mat_in2_2d[2][2]={{1,0},{0,1}}; int mat_out_2d[2][2]={{0},{0}}; mat_mul_2d(mat_out_2d,mat_in1_2d,mat_in2_2d); return 0; }
not sure if this is the right place to ask, but i need some help for my problem here. i want to find inverse, upper triangular and determinant for a matrix. but i'm not sure why it doesn't work like what i want. for now, i just want try to …
The goal of the program is to make a sparse matrix using circularly linked lists. basically its a matix what only has values at the locations entered, and the rest of the lactions are not defined. the question i have is the logic for the code. how would i go …
OpenGL GLUT **My question is at the end of this topic** 1) a) Use your logo you drew within a world coordinate space that has 0,0 at the center. You may choose any width and height for your world coordinate space, glut window and viewport. Be sure that you separate …
In this assignment the user has to input a matrix and then the program has to show that matrix and the transpose of it. I've got that part running. My teacher added a tweak. Basically when the user inputs the matrix the program has to only ask the number of …
I decided that before I would actually write the code for my planned inventory system in a game I am writing I would test it out in a small project first to make sure I know what needs to be done and if I needed to change anything. So I …
Could someone PLEASE HELP ME!!! :( I need to write a program that reads an integer matrix A from standard input and outputs the input matrix and the transpose. The input matrix A is limited to have at most 10 rows and 10 columns. Given a matrix A has m …
I want to write a program that does the following: reads and integer matrix from stdin and outputs the input matrix, its transpose and multiplication of the input matrix with its transpose. I limited the matrix to a 10x10. I want to ask the user to enter a number of …
#include<stdio.h> #define MOD 100000009 #define REP(i, n) for(i = 0; i < n; ++i) void mul(int a[2][2],int b[2][2]) { int i,j,k; int c[2][2]; for(i=0;i<2;i++) { for(j=0;j<2;j++) { c[i][j]=0; for(k=0;k<2;k++) { c[i][j]+=(a[i][k]*b[k][j]); } } } // matrix multiply i=0;j=0; REP(i,2) REP(j,2) b[i][j]=c[i][j]; // copying the value in back to b[][] return; …
Okay, I'm very new to Java as a whole, and I'm just trying to get to grips with it. I'm experimenting with classes, and I'm struggling to get this one thing to work. Basically, I've made a short program which one can make matrices, and all it has at the …
hi.... Let F be the matrix 1 1 1 0 Then F^n (2x2 matrix multiplication) equals F(n+1) F(n) F(n) F(n-1) because: (F(n+1) F(n) ) (1 1) = ( F(n+1)+F(n) F(n+1)) (F(n) F(n-1)) (1 0) = ( F(n)+F(n-1) F(n) ) Can anybody tell me or give me the hint that how …
I was thinking about somehow using a static member that all the matrix cells will be defined by their value + the static value. but than i thought how can i do it? what is the easiest way of doing so without the need to run over the 10^6 cells? …
Can anybody give me code snippet for finding the nth fibo number in logn time using matrix exponentiation ? thanks in advance.
Here's my code: #include<stdio.h> #include<conio.h> int main(void) { int a[100][100]; /* initializing matrices to '0' */ int b[100][100]; int c[100][100]; /*matrix-c for multiplication*/ /*r1,c1 are rows and coloumns for matrix-a.r2,c2 for matrix-b.*/ int r1,c1,r2,c2; int i,j,k; clrscr(); printf("enter the no of ROWS and COLOUMNS for MATRIX-A\n"); scanf("%d %d",&r1,&c1); printf("enter the …
for (k=0; k<M; k++) for (i=0; i<N; i++){ c[i][k]=0.0; for(j=0;j<P;j++) c[i][k]+ =a[i][j]*b[j][k]; I have implemented the above sequential matrix-matrix multiplication algorithm, but i'm not sure about implementing a method to display the output to verify that the algorithm works as expected.
How can I find the differences between two matrix? I should find the diverse numbers. Thanks in advance for your help!
How can I compare Dimensional arrays using iterators? My attempt is below but I gave up and used indexing instead. I plan to change comparing doubles with == to use epsilon later. Also should I be using vector of vectors? //In my class, Data is defined as std::vector<std::vector<double>> Data; bool …
what is determinanat of matrix i have a code i dont understand what is the logic behind
I know it's a bad practice to post the same question on more than one help site (I posted it on Stackoverflow, but after some time your question loses its place on the "active" list and people stop reading it) but I'm really desperate here. So my question is: I …
hi, this is the code for my class for matrix multiplication. but i am not getting the required result of multiplication getting error as "Number of indices exceeds the number of dimensions of the indexed array" please help me to solve this problem... thaking you..... Public Class complexnum Private x …
can any body tell me a udf program in c++ which accepts a squared integer matrix with odd dimensions(like 3*3,5*5....) & display the sum of the middle row and middle column elements. please help me if you can................
Hi again, all--- I'm trying to write a function that will add two matrices and output the resulting matrix. I've got two matrices already and everything, now i just need to write the function that i can use to call in my switch loop (The program must read two matrices, …
Hi, I have a matrix of size of n x m, how can the file be read without any given size, thus making it possible to be read with any given size matrix?. Here is the scenario, I have a matrix of size 3 x 2 then someone wants to …
please help me coding this in c++: Inverse matrices. Calculate matrix determinant. Set a row or a column of the matrix to a certain value. Calculate performance (time and memory taken by each algorithm).
matrix operation please help me coding this in c++: - Inverse matrices. - Calculate matrix determinant. - Set a row or a column of the matrix to a certain value. - Calculate performance (time and memory taken by each algorithm).
suppose i got a matrix 0 1 0 0 2 0 0 0 4 0 5 0 2 1 3 4 4 5 0 0 0 3 2 0 2 Select a matching by choosing a set of zeros so that each row or column has only one selected. It …
The first step in image watermarking using DCT is to divide the image into 8 x 8. My question is do I have to divide the image as a whole or divide them by RGB channels so that for each channel I will divide them by 8x8. Any comments will …
How to make this program #include <stdio.h> #include <conio.h> #include <math.h> int main(){ clrscr(); for(i=0;i<10;i++) for(j=0;j<10;j++) printf("a[%d][%d] = %d \n",i,j,a[i][j]); printf("cu pointer\n"); for(i=0;i<10;i++) for(j=0;j<10;j++) printf("a[%d][%d] = %d \n",i,j,*(p+i)); getch(); } int a[4][4],b4[3][3],b1[3][3],b2[3][3],b3[3][3],n,c1,c2,c3,c4,i,j; printf("\nIntroduceti elementele Matricei cu 4 linii si 4 coloane: \n"); int *mat; n=4; for (i=0; i<n; i++){ for …
Hello, I have been reading an article on comparing data, and have been given this code: for(i = 0; i < matrix1W; i++) { for(j = 0; j < matrix2H; j++) { diffSum += abs(matrix2->pData[(row+j)*backW+(col+i)] - marix1->pData[j*matrix2+i]); } } Now it works when using arrays, but, I'm using vectors, is …
So am doing a run down of different 3DMath Libraries. I am noticing functions with return types are HORRIBLY inefficient compared to void returns. I decided to do a rundown of how move constructor/assignment effects this. Well having a move constructor is seeing an average of 3.5-4x improvement, but doing …
# Can someone help me with this program by fixing it I should finish it before tomarrow and I don't know where I went wrong# #include<stdio.h> //header file #include<conio.h> //header file #include<stdlib.h> //header file #include<time.h> //header file #include<math.h> //header file #define PI 3.14159 //header file indicating that pie is equal …
# I HAVE DONE ABOUT EVERY THING AND I CANNOT SEEM TO SEE WHERE I WENT WRONG CAN SOMEONE PLEASE TELL ME WHAT I DID WRONG I NEED TO DONE THIS BY TOMARROW ASAP!!!!!!# #include<stdio.h> //header file #include<conio.h> //header file #include<stdlib.h> //header file #include<time.h> //header file #include<math.h> //header file #define …
# I have tried about a million times to fix the error but still no result and I need to fix this before tomarrow can someone help by showing me what to do the compiler shows that the error is at the curly braces after void triangle(int a, int b, …
How to add two sparse matrices stored in 2d arrays??
basically what ive got going is some transformations using my own functions, ive got them working fine still using glMultMatrix but im not allowed to use that for this. im trying to make my own matrix multiplication function and im getting stuck somewhere. the matricies are all one dimensional arrays …
Hola code gurus, I’m wondering if there’s a way to use a string to access a specific item in a matrix of int[X]. I have a program which uses enums as iterators to reference a large amount of data. To select an item in the matrix, the user will enter …
Hey guys! I have an encryption project for school and i have to randomly generate a 3x3 matrix. I know how to assign the values to the 2d array but i am unsure how to return the array. I know it is possible to return a vector of a vector …
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