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c02d.c ' |
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/* ---------------------------------- */
/* save as c02d.c */
/* ---------------------------------- */
#include "x_hfile.h"
#include "fd.h"
/* ---------------------------------- */
int main(void)
{
clrscrn();
printf(" The line y = a x + b (a!=0) \n\n");
printf(" is an asymptote at the curve of f at oo+ (or oo-) if :\n\n\n");
printf(" lim f(x) lim [f(x)-a*x] = b \n");
printf(" x->+oo ---- = a and x->+oo \n");
printf(" x \n\n\n");
printf(" or \n\n\n");
printf(" lim f(x) lim [f(x)-a*x] = b \n");
printf(" x->-oo ---- = a and x->-oo \n");
printf(" x \n\n\n");
stop();
clrscrn();
printf(" f : x-> %s\n\n\n", feq);
printf(" lim f(x) \n");
printf(" a = x->+oo ---- = %.3f\n", f_a(1000000000));
printf(" x \n\n\n");
printf(" b = lim [f(x)-a*x] = %.3f\n", f_b(1000000000));
printf(" x->+oo \n\n\n");
printf(" The line y = %.1f*x %+.1f",
f_a(1000000000),f_b(1000000000));
printf(" is an asymptote at the curve of f at oo+ \n\n\n");
stop();
return 0;
}
/* ---------------------------------- */
/* ---------------------------------- */
Dessinons avec gnuplot la fonction f et son asymptote :
set zeroaxis lt 8
set grid
plot [-20.000:20.000] [-20.000:20.000] x+9./x,\
x
reset
Exemple de sortie écran :
The line y = a x + b (a!=0)
is an asymptote at the curve of f at oo+ (or oo-) if :
lim f(x) lim [f(x)-a*x] = b
x->+oo ---- = a and x->+oo
x
or
lim f(x) lim [f(x)-a*x] = b
x->-oo ---- = a and x->-oo
x
Press return to continue.
Exemple de sortie écran :
f : x-> (x+9./x)
lim f(x)
a = x->+oo ---- = 1.000
x
b = lim [f(x)-a*x] = 0.000
x->+oo
The line y = 1.0*x +0.0 is an asymptote at the curve of f at oo+
Press return to continue.
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