Ivan Shishkin, Rye (1878)

Problems/Set theoryExercise

Ma première fonction à deux variables

by Ancient Tree·
19
Difficulty scaleÉchelle de difficulté

This score reflects both the level of the required concepts and the difficulty of the solution.Ce score tient compte à la fois du niveau des notions nécessaires et de la difficulté de la résolution.

  1. 1–10First steps / middle schoolPremiers pas / collège
  2. 11–25Beginner / high schoolDébutant / lycée
  3. 26–50Intermediate / undergraduateIntermédiaire / licence
  4. 51–70Advanced / graduateAvancé / master
  5. 71–90Expert / specializedExpert / spécialisé
  6. 91–100Research levelNiveau recherche
These levels are approximate guides.Ces niveaux sont des repères approximatifs.
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ReviewedReviewed by darktoaster
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Français
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On note ff la fonction définie sur R2\R^{2} par ∀(x,y)∈R2,f(x,y)=2x+y\forall (x , y) \in \R^{2}, f(x,y)=2x+y.

Calculer :
f(1,2),f(0,0),f(100,−1).f(1,2),\quad f(0,0), \quad f(100,-1).

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Solution by darktoaster

Discussions0 useful votes

f(1,2)=2⋅1+2=4f(1,2) = 2\cdot 1 +2 = 4
f(0,0)=2⋅0+0=0f(0,0) = 2\cdot 0 + 0 = 0
f(100,−1)=2⋅100+(−1)=199f(100,-1) = 2\cdot 100 + (-1) = 199

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