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Sagot :

Réponse :

AB = 5 ; AD = 10 ; BM = x

BM + MC = BC = 22

MC = 22 - x

1) 0 <= x <= 22

2)

f(0) = DB (quand le point M = point B)

f(22) = DC (quand le point M = point C)

DB <= f(x) <= DC

3) faire la figure avec le point M = point B

4) triangle rectangle ABD = triangle ADM

théorème de pythagore

DB² = AB² + AD² = 5² + 10² = 25 + 100 = 125

f(0) = DB = √125 = 11,180

Explications étape par étape

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