24 lines
548 B
C
24 lines
548 B
C
|
|
void jacobn(float x, float y[], float dfdx[], float **dfdy, int n)
|
|
{
|
|
int i;
|
|
|
|
for (i=1;i<=n;i++) dfdx[i]=0.0;
|
|
dfdy[1][1] = -0.013-1000.0*y[3];
|
|
dfdy[1][2]=0.0;
|
|
dfdy[1][3] = -1000.0*y[1];
|
|
dfdy[2][1]=0.0;
|
|
dfdy[2][2] = -2500.0*y[3];
|
|
dfdy[2][3] = -2500.0*y[2];
|
|
dfdy[3][1] = -0.013-1000.0*y[3];
|
|
dfdy[3][2] = -2500.0*y[3];
|
|
dfdy[3][3] = -1000.0*y[1]-2500.0*y[2];
|
|
}
|
|
|
|
void derivs(float x, float y[], float dydx[])
|
|
{
|
|
dydx[1] = -0.013*y[1]-1000.0*y[1]*y[3];
|
|
dydx[2] = -2500.0*y[2]*y[3];
|
|
dydx[3] = -0.013*y[1]-1000.0*y[1]*y[3]-2500.0*y[2]*y[3];
|
|
}
|