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Yopolo03
@Yopolo03
January 2021
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Je n'ai pas compris cet exercice vous pouvais m'aider car j'ai un problème sur mes calculs sur l'exercice 21 merci
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AhYan
A) AC² = AH² + HC²
AH² = AC² - HC²
AH² = 5² - 2,5²
AH² = 25 - 6,25
AH² = 18,75
AH = √18,75 ≈ 4,3cm
Aire ABC = (AH×BC)/2 = (4,3×5)/2 = 21,5/2 = 10,75cm²
b) x² = AH² - x²/4
AH² = x² - x²/4
AH² = 3x²/4
AH = x√3/2
c) f(x) = √3/2x
f(5) = 5√3/2 ≈ 4,3
f(3) = 3√3/2 ≈ 2,6
f(√3) = √3×√3/2 = 3/2 = 1,5
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Yopolo03
January 2021 | 0 Respostas
Merci pour l'exercice que j'ai pas compris de m'aider n*14
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Yopolo03
January 2021 | 0 Respostas
Je n'arrive pas faire les exercices de mon Livre merci . C'est le 21 et 22
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Lista de comentários
AH² = AC² - HC²
AH² = 5² - 2,5²
AH² = 25 - 6,25
AH² = 18,75
AH = √18,75 ≈ 4,3cm
Aire ABC = (AH×BC)/2 = (4,3×5)/2 = 21,5/2 = 10,75cm²
b) x² = AH² - x²/4
AH² = x² - x²/4
AH² = 3x²/4
AH = x√3/2
c) f(x) = √3/2x
f(5) = 5√3/2 ≈ 4,3
f(3) = 3√3/2 ≈ 2,6
f(√3) = √3×√3/2 = 3/2 = 1,5