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Texas Instruments TI-Nspire CX CAS Manual

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nSolve()
Catalogue >
nSolve(Équation,Var[=Condition])⇒
chaîne_nombre ou erreur
nSolve(Équation,Var
[=Condition],LimitInf) ⇒chaîne_nombre
ou erreur
nSolve(Équation,Var
[=Condition],LimitInf,LimitSup)
⇒chaîne_nombre ou erreur
nSolve(Équation,Var[=Condition]) |
LimitInf{Var{LimitSup ⇒chaîne_nombre
ou erreur
Recherche de façon itérative une solution
numérique réelle approchée pour Équation
en fonction de sa variable. Spécifiez la
variable comme suit :
variable
– ou –
variable = nombre réel
Par exemple, x est autorisé, de même que
x=3.
Remarque : siplusieurs solutions sont
possibles, vous pouvez utiliser une condition
pour mieux déterminer une solution
particulière.
nSolve() est souvent plus rapide que solve()
ou zeros(), notamment si l'opérateur «| »
est utilisé pour limiter la recherche à un
intervalle réduit qui contient exactement
une seule solution.
nSolve() tente de déterminer un point où la
valeur résiduelle est zéro ou deux points
relativement rapprochés où la valeur
résiduelle a un signe négatif et où son ordre
de grandeur n'est pas excessif. S'il n'y
parvient pas en utilisant un nombre réduit
de points d'échantillon, la chaîne «Aucune
solution n'a été trouvée » s'affiche.
Remarque : voir aussi cSolve(), cZeros(),
solve(), et zeros().
… 142 …


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