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IDString.c
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IDString.c
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#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main () {
int Xsteps;
double deltaX=0.01;
double Tsteps=100; //los que quiera
double deltaT=0.0001;
double L=1;
double c=20;
double x=0;
Xsteps=L/deltaX;
double y[Xsteps+1];
double yanterior[Xsteps+1];
printf("\n Xsteps: %8.4d", Xsteps);
y[0]=0;
y[Xsteps]=0;
for(int i=1;i<=Xsteps;i++){
x=x+deltaX;
y[i]=5*sin(4*M_PI*x/L);
printf("\n x: %8.4f", x);
printf("\n elemento inicial de y: %8.4f", y[i]);
}
for(int i=1;i<=Xsteps;i++){
y[i]=2*y[i]-y[i]+(pow(c,2)/pow(deltaX/deltaT,2))*(y[i-1]+y[i+1]-2*y[i]);
yanterior[i]=y[i];
}
for(int j=1;j<Tsteps;j++){
printf("\n evolucion del punto medio: %8.4f", y[Xsteps/2]);
for(int i=1;i<=Xsteps;i++){
y[i]=2*y[i]-yanterior[i]+(pow(c,2)/pow(deltaX/deltaT,2))*(y[i-1]+y[i+1]-2*y[i]);
yanterior[i]=y[i];
}}
return 0;
}