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aula revisao - ILEA

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Cálculo de Atividade<br />

dN/dt = - λ . N<br />

dN/N = - λ . dt<br />

∫<br />

dN/N = ∫ - λ . dt<br />

Integrando de N 0 a N e de 0 a t :<br />

ln N – ln N 0 = -λ . (t – 0)<br />

ln (N/N 0 ) = -λ . t<br />

N/N 0 = e -λ . t

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