Exemple : Fonctions d'erreur

Fonctions > Fonctions spéciales > Autres fonctions spéciales > Exemple : Fonctions d'erreur

1. Utilisez la fonction erf pour tracer la fonction d'erreur selon différentes valeurs de x.

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La fonction erf est symétrique par rapport à la ligne y=0.

2. Utilisez la fonction erfc pour tracer la fonction d'erreur complémentaire selon différentes valeurs de x.

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              <math resultRef="121">
                <apply xmlns="http://schemas.mathsoft.com/math50">
                  <id xml:space="preserve">erfc</id>
                  <id xml:space="preserve">x</id>
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Les fonctions erfc sont symétriques par rapport à la ligne y=1.0.

3. Créez un tracé pour afficher les relations entre les fonctions erf et erfc selon les différentes valeurs de x.

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                <apply xmlns="http://schemas.mathsoft.com/math50">
                  <id xml:space="preserve">erf</id>
                  <id xml:space="preserve">x</id>
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                  <id xml:space="preserve">erfc</id>
                  <id xml:space="preserve">x</id>
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Les fonctions sont symétriques par rapport à la ligne y=0.5.

4. Créez un tracé pour afficher erfc(x)=1-erf(x) selon les différentes valeurs de x.

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Rubriques associées

Fonction d'erreur et fonction d'erreur complémentaire

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