Code Definition and 908 Threads

First of all, this might give seasoned Mathematica users some serious eye sores cause I'm a newb at this xD f[x_] := (1^-9) (Exp[38.629 x] - 1); data = Table[if[[f[x], {x, -5, 5, 0.01}] > 0.005, 0.005, f[x]]]; ListPlot [data, DataRange -> {-5, 5}, Joined -> True, PlotRange -> {0, 0.01}...

I need to write some c code that displays a counter value on four 7 segment displays. The number should increment by one every time a button is pushed. I cannot test this code as my home computer will not run Quartus 2 so I am working blind at the moment, but I would still like to ask some...

A few months ago my hard drive crashed and I managed to recover the data and I tried to run some of my old programs (one solving an ODE via Newton's method. Before the crash, the error was 10^-8 after around 3 iterations, now it won't converge. It looks fine, ithe than writing the code from...

Homework Statement Hello, I want to obtain a solution to a, where k is a constant. The formula is: k/a = tan(a) I need to write a MATLAB code for this but I have been struggling for hours. And I must send the project to my professor in an hour. :( Homework Equations I know that I need to...

I need some kind of environment in Latex where you can write whatever you want without it interpreting it. The reason is I need to include a MATLAB code. Most places I go says I have to use the lstlisting environment, but that doesn't work. Or at least I get this error: ! Package inputenc...

[b]1. Explain what the CPU will do in terms of functuality and configuration when executing the C source code below: unsigned char value = 0x91 1) BSR = 5; 2) BSRbits.3 = 1; 3) INTCONbitsTMR0IE = 1; 4) INTCON2bitsTMR0IP = 1; 5) TRISB = 0x00; 6) PORTB = 0x00; Please can...

// Program to categorize a single character that is entered at the terminal #include <stdio.h> int main (void) { char c; printf ("Enter a single character:\n"); scanf ("%c", &c); if ( (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ) printf ("It's...

Homework Statement Let G = (V,E) be a graph with vertices V and edge set E. Aldous-Broder algorithm: Input: G = (V,E) Output: T = (V, W), where W is a subset of E such that T is a spanning tree of G. Let W be the empty set. Add edges to W in the following manner: starting at any...

How can I enter code in Latex documents?

Hi Controlling the LEGO NXT Using MatLab What are my mistakes in this code ??! COM_CloseNXT all clc clear handle = COM_OpenNXT(); COM_SetDefaultNXT(handle); COM_CloseNXT(handle); NXT_GetBatteryLevel(handle); COM_CloseNXT(handle); COM_CloseNXT all clc clear...

Hi, I am trying to use Matlab to analyse this raw signal by introducing Dc-offset analysis: I used the following code : a = [1 , -0.98]; b = [1,-1]; y = filtfilt(b,a,x); figure plot(y) And the result : But, I am trying to get a final result similar to the last graph...

1 1 2 1 1 2 1 2 1 1 2 1 2 1 2 1 1 2 1 2 1 2 1 2 1 I am stumped on how to do this, is it really as easy as it looks?

Hi. I'm new here and wasn't sure which forum to post this request on, but this one seemed a good start. I am developing a talk/seminar on dealing with legacy code. In the late 1990s I was working for a large corporation in a software capacity and one day idly wondered what the source code...

Hello! I have been trying to get this equation to work in my LaTeX document, I do not really see any issues with it so if somebody could give some guidance that would be really helpful. Code: \begin{equation} {\bf{R}} = \sum_{i=1}^{N}_{{\bf{u}}_{i}} \end{equation} Thank you

A is a sparse matrix. B is a vector. I have the following code: for j=1:N B=A*B; end; This part of the code is inside a function which gets called about 160000 times. I ran the Profiler and this part is the bottleneck. How can I make it more efficient?

I've been using this for a Newton Approximation in Matlab function x = Newton(f, fp, x, nmax, e) % f is an inline function which we apply Newton's method on % fp is an inline function that is the derivative of function f % x is the initial guess of the root % nmax is the total number...

Hi all. I am currently working on quicksort and have written the following code and gives "almost" good results. I am not too fond of the data structure I have chosen but it is too late for me to change. Lesson learned. Can anyone help me debug this thing. I have been at it for a while. Anyway...

Hi, I am trying to plot the AN product sec II.C in the attached paper as: clear all clc s=0.5; w=0; d=5; f=0:20; NdB1=(17-30.*log10(f)); N1=10.^(NdB1./10); NdB2=40+20*(s-0.5)+26.*log10(f)-60.*log10(f+0.03); N2=10.^(NdB2./10); NdB3=50+7.5*w^0.5+20.*log10(f)-40.*log10(f+0.4)...

Hi friends . is there anybody here who can give me a fortran code for describing fcc lattice and give us the neighbours of each site and also which pay attention to periodic condition ? thank you for your help my friends.

I have to write a program validating credit card numbers using Luhn's algorithm. I am having trouble getting my last function to work. For a credit card number I'm supposed to double every second digit from right to left, and sum them (note double digits, like 10=1+0), and then add the rest of...

Homework Statement Make a code that can check if one or many words are palindromes. The Attempt at a Solution I can't get my compiler to work so I wrote my attempt in a note document. Please can you check if it works and if it doesn't give me some guidence.. I have put a lot of time...

Hi! I have some trouble understanding this question. Could someone help me with it? Thanks! Solve the following with the explicit method from t=0 to t=0.5 with h=1/10 and with μ(=k/h2)=0.5 ut = uxx, -1 ≤ x ≤ 1, t>0 u(0,x) = cos(x), -1 ≤ x ≤ 1 u(t,-1) = u(t,1) = e-tcos1, t>0 Compute...

I'm trying to understand what I have just learned. So some sort of browser based code or binary was discovered in equations for super-string theory. I have a few questions since I am very confused. If code was created by Claude Shannon in the 1940's, then how could it be in this code? Does...

Homework Statement Write a single line MIPS assembly code as an input through the SPIM simulator console and the program will output a 32 bit MIPS machine code through the console. I'm using PCSpim to write the code. An example, I input this instruction in the console. addi...

hi friends. i don't know how can i write a fortran code for expressing spins in Heisenberg model which have 3 dimension spin operator, sx,sy,sz? thanks for your help

I have array of natural numbers from 1 to n. They are divided into m groups, where m*(m-1)=n. I need all m-1 elements from first group, last m-2 elements from second group, last m-3 elements from third group...zero elements from last group. For example 5*4=20: 1,2,3,4; 5,6,7,8...

having issues with programming, can some one help me write a code for a push button hobby servo control?

http://lolcode.com/home I figured a few people here will appreciate it as well. :biggrin:

I have a Fortran (F77) code which I used to use at my previous institution that I am having trouble with at my new job. I used to compile it with ifort on computers running Fedora (14 if I recall correctly). At my new job they don't have ifort so I have had to revert to the use of g77 (f77) on...

Hi everyone, I have some trouble adapting an existing fortran code for my application. In the following Module I am optimizing a value for two planes ( i = iplan one&two). In order to do that, I need to assign ten certain values from an external inp. file for each plane. I have two loops...

Hi, For example, say we have the binary integer 101010 and I split it into blocks, say (1)(01)(01)(0). The size of the blocks is determined by some function. We want to count the number of '1' bits inside each of these blocks. I'm interested in a fast C++ code to do this. There are fast...

Hi, I'm currently working on a project that requires me to convert a Fortran code into excel vba. There are some problems that I've stumbled into, so itll be great if someone could help out. one of it would be on how to convert a COMMON statement in Fortran to Excel VBA ( as in how would...

Hi, I am having a segmentation fault error just when I ask the code to print the value ipos in the program. However, If I change the print to the module, the segmentation fault does not appear. Could anyone can help know, why I can not transfer the variable ipos from the module to the main...

Hi How can I see the source codes used for defining intrinsic functions in Fortran 90/95 ? e.g. what is the actual program for sqrt ? thanks

The code runs but I get the wrong answers can you take a look at the code for this . ANSWERS ****************** x(1) = 1.035 x(2) = 1.086 x(3) = 0.927 ****************** clc clear F = @(x) [15*x(1)+(x(2)^2)-4*x(3)-13;... (x(1)^2)+10*x(2)^2-x(3)-11...

Please I need HELP IMEDIATLY This is the error message that i get ? Error using ==> gauss_sied Too many input arguments. Error in ==> HW_14 at 23 [x_wo, cnt, x_w,cntt] = gauss_sied(xo, A, b, es, lam); clc clearC = [-8 1 -2 -20 2 -6 -1 -38 -3 -1 7 -34]; A = C(:,1:end-1); b = C(:,end);nr =...

the following code #include<stdio.h> #include<stdlib.h> int main (int argc, char *argv[]) { int* a; *a=1; return 0; } compiles ok, but throws "Segmentation fault (core dumped)" at runtime why is that? i'm working with gcc in ubuntu. I have been able to compile and run...

Hi all ! This is a weird problem. A simple program to read a file and display it works differently when compiled with different versions of the same compiler. When I compile it as: garbageij@garbageij:~/NMA$ mpif90 exp4.f90 and run it, it gives the correct output. But when I compile it as...

I have the following code with error- I want this general flow. Errors I get are missing ')' at the do while line, syntax error on the line started with ****(not part of program added after fact) and expecting END Program statement at line end do counter=1 user_reaction =3 do while (counter...

I have written some routines that compute the 2D inverse Fourier transform, if anyone thinks that this may be useful at all then please let me know and I will gladly post the code.

Hi all, I need help to edit the code so that the arrangment of the outputs match the one that Iam looking for. For instance: term[n_Integer, m_Integer] := Apply[Dot, Table[matg[[i]], {i, m + 1, n}]].hl[[m]] /; (n >= m); Subscript[lay, s_] := Sum[term[s, i], {i, s}]; In[1]...

Structural Analysis-Writing Finite Element Code, Dear all, I have written a code ( in fact it is a software) for 3D finite element structural analysis. While developing the code I found that assembling global stiffness matrix is quite complicated. The complication is even more when we...

we have to write a code to solve system of equations by writing them in matricies (tridiagonal matrix) form ... the first step is to enter the coefficients of the variables (r1,r2,r3,...) and then the answers to the equations (b1,b2,b3,...) by using array , and print the equations in the form...

I just began a course on computer science and we're to use Code Blocks as the program to use, but I can't get the darn thing to work. The built in simple program called "hello world" is supposed to have a black window pop up that says "hello world", but the window pops up and disappears and I...

I'm trying to fix up my dads website but the old version seems to have been made using some sort of WYSIWYG editor so the code is completely senseless and complicated. So I think it would be quicker to start and just re make the website from the ground up but I haven't got the time to fiddle...

Hi, I have a fortran 77 code, I compiled it on cygwin in windows 7 by using f77 and gfortran, and it has been working correctly. I should use this code on Ubuntu, so I installed f77, gfortran and gcc compiler. I tried to comile that code by using f77 but it gave me the following error: > f77...

I need to NDsolve four differential equations. But I find my code does not work. Who can give me some suggestions? Thanks!

Hello, I'm trying to make part of a code that reads a csv file with data containing the date and time, and the wind speed at that time, then does various output things. When I copy and paste 1000 entriesinto a csv file and ru it, it works great, but if I use the file that's about 6,000kb it...

Homework Statement I need to figure out how to find out the amount of check digits in a (15,11) hamming code. I know the amount of check digits is four and the amount of information digits is 7 but I don't know how to figure out how to get the answer, I only have the answer. Homework...

Hi everybody, I have old Fortran code, originally written in the mid 1970's for an Elmer system. The code has been adapted through the years, last run successfully in 2009. The code has now landed on my lap after having been "retired" due to obsolescence. I am a pure Fortran beginner...