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Vhbhv12479
@Vhbhv12479
May 2019
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Bonsoir svp jai besoin d’aide pour ce problème de maths merci d’avance
Résoudre sur [-\pi ,2\pi ] l’équation 2sin|x|-1=0
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Commentaires (1)
Équation 2 sin |x|=1
donc sin |x| = sin(π/6)
donc |x|=π/6+2kπ ou |x|=5π/6+2kπ
donc dans [-π;2π] :
S={-5π/6;-π/6;π/6;5π/6;7π/6;11π/6}
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Vhbhv12479
Merci bcp
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donc sin |x| = sin(π/6)
donc |x|=π/6+2kπ ou |x|=5π/6+2kπ
donc dans [-π;2π] : S={-5π/6;-π/6;π/6;5π/6;7π/6;11π/6}