Mathc initiation/a323
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c00a3.c |
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/* ---------------------------------- */
/* save as c00a3.c */
/* ---------------------------------- */
#include "x_hfile.h"
#include "fa.h"
/* ---------------------------------- */
int main(void)
{
double Ix = lint2d_ds(yyf, g,h, a,b,LOOP);
double Iy = lint2d_ds(xxf, g,h, a,b,LOOP);
clrscrn();
printf(" If a thin wire has the shape of a plane curve C\n");
printf(" and if the linear mass density at (x,y) is F(x,y),\n");
printf(" find the moments of inertia Ix and Iy with the\n");
printf(" respect to the x- and y-axes, respectively.\n\n");
printf(" With :\n\n");
printf(" F x,y -> %s \n\n", feq);
printf(" and C has the parametrization :\n\n\n");
printf(" x = %s; y = %s; %.1f < t =< %.1f \n\n\n",
geq, heq, a, b);
stop();
clrscrn();
printf(" Compute the moment of inertia Ix.\n\n");
printf(" (\n");
printf(" Ix = int( y**2 F(x,y) ds = %+.3f\n", Ix);
printf(" (C\n\n\n");
printf(" Compute the moment of inertia Iy.\n\n");
printf(" (\n");
printf(" Iy = int( x**2 F(x,y) ds = %+.3f\n", Iy);
printf(" (C\n\n\n");
stop();
return 0;
}
/* ---------------------------------- */
/* ---------------------------------- */
Exemple de sortie écran :
If a thin wire has the shape of a plane curve C
and if the linear mass density at (x,y) is F(x,y),
find the moments of inertia Ix and Iy with the
respect to the x- and y-axes, respectively.
With :
F x,y -> y
and C has the parametrization :
x = cos(t); y = sin(t); 0.0 < t =< 3.1
Press return to continue.
Exemple de sortie écran :
Compute the moment of inertia Ix.
(
Ix = int( y**2 F(x,y) ds = +1.333
(C
Compute the moment of inertia Iy.
(
Iy = int( x**2 F(x,y) ds = +0.667
(C
Press return to continue.