HP 35s Scientific Calculator Manuel d'utilisateur Page 335

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 382
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 334
More about Solving D-13
Solve for X using initial guesses of 10
–8
and –10
–8
.
RoundOff Error
The limited (12–digit) precision of the calculator can cause errors due to rounding
off, which adversely affect the iterative solutions of SOLVE and integration. For
example,
has no roots because f(x) is always greater than zero. However, given initial guesses
of 1 and 2, SOLVE returns the answer 1.0000 due to round–off error.
Round–off error can also cause SOLVE to fail to find a root. The equation
has a root at . However, no 12–digit number exactly equals , so the
calculator can never make the function equal to zero. Furthermore, the function
never changes sign SOLVE returns the message   .
Keys:
(In RPN mode)
Display: Description:

X

_
Enters guesses.
J

Selects program "J" as the function.
X


Solves for X; displays the result.
0 10 - ]10 1) x [(
30215
=++
0 7-x
2
=
7
7
Vue de la page 334
1 2 ... 330 331 332 333 334 335 336 337 338 339 340 ... 381 382

Commentaires sur ces manuels

Pas de commentaire