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Alix147
@Alix147
May 2019
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BONjour est ce que vous pouvez m aider car je n y arrive pas
Merci d avance
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trudelmichel
Bonjour,
aire colorée
a)grand demi cercle =π 5²=25π
b)petit demi cercle ∅ =x = π (x²/4)
c)petit demi cercle ∅=(10-x) = π ((10-x)/2)²= π ((100-20x+x²)/4=π (25-5x+(x²/4)
aire colorée=(a+c)-b
(25 π)+π(25-5x+(x²/4)-π(x²/4)
π (25+25-5x+(x²/4)-(x²/4)
π( 50-5x)
3.14(50-5x)
157-15.7x
y=-15.7x+157
est une fonction affine
1 votes
Thanks 1
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Lista de comentários
aire colorée
a)grand demi cercle =π 5²=25π
b)petit demi cercle ∅ =x = π (x²/4)
c)petit demi cercle ∅=(10-x) = π ((10-x)/2)²= π ((100-20x+x²)/4=π (25-5x+(x²/4)
aire colorée=(a+c)-b
(25 π)+π(25-5x+(x²/4)-π(x²/4)
π (25+25-5x+(x²/4)-(x²/4)
π( 50-5x)
3.14(50-5x)
157-15.7x
y=-15.7x+157
est une fonction affine