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Perrine1
@Perrine1
January 2021
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bonjour comment simplifier (2n-1)*((1/2)^n) ? merci à vous
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aur70
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(2n-1)*((1/2)ⁿ) = (2n-1)*(1/(2ⁿ)) = (2n-1)*(2⁻ⁿ) = 2n*2⁻ⁿ - 2⁻ⁿ =2¹⁻ⁿn - 2⁻ⁿ
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(2n-1)*((1/2)ⁿ) = (2n-1)*(1/(2ⁿ)) = (2n-1)*(2⁻ⁿ) = 2n*2⁻ⁿ - 2⁻ⁿ =2¹⁻ⁿn - 2⁻ⁿ