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Brunardv97
@Brunardv97
January 2020
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Calcule o valor da base nas igualdades :
a) Log a 81 =4
b) Log a 243=5
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Marryanjo
Melhor resposta:
A) a^4 = 81 ------->a^4 = 3^4 ------> a = 3
B) a^5 = 243 -----> a^5 = 3^5-----> a = 3
C) a² = 1/9 ------> a = 1/3
D) (a)^-2 = 16 -------> (a)^-2 = 4² -----> a = 1/4
E) a² = 100 ----------> a = 10
F) a³ = 1/8 ------------> a³ = (1/2)³ -----> a = 1/2
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Lista de comentários
B) a^5 = 243 -----> a^5 = 3^5-----> a = 3
C) a² = 1/9 ------> a = 1/3
D) (a)^-2 = 16 -------> (a)^-2 = 4² -----> a = 1/4
E) a² = 100 ----------> a = 10
F) a³ = 1/8 ------------> a³ = (1/2)³ -----> a = 1/2