holaa necesito sabes los logaritmos y tambien la formula ----->
1)log 1/4 =x?
2
2)log 4 =x?
1/2
3)log 1/32=x?
2
4)log 1/27=x?
3
5)log 2=x?
1/32ç
6)log 1/81= x?
1/3
7)log 2=x?
1/2
8)log 1/128 =x?
1/2
me pueden ayudar??
Respuestas
Respuesta dada por:
2
Por definicion:
x
log N = x ⇔ b = N
b
1)log 1/4 =x
2
⇔ 2^x =1/4
2^x = (2)^(-2)
x = -2
2)log 4 =x
1/2
⇔ (1/2)^x = 4
2^(-x) = 2^2
-x =2
x = -2
3)log 1/32=x
2
⇔ 2^x = 1/32
2^x = (2)^-5
x = -5
4)log 1/27=x
3
⇔ 3^x = 1/27
3^x = (3)^(-3)
x = -3
5)log 2=x
1/32
⇔ (1/32)^x = 2
2^(-5x)=2
-5x =1
x = -1/5
6)log 1/81= x
1/3
⇔ (1/3)^x = 1/81
(1/3)^x = (1/3)^4
x =4
7)log 2=x
1/2
⇔ (1/2)^x = 2
2^(-x) = 2
-x =1
x = -1
8)log 1/128 =x
1/2
⇔ (1/2)^x = 1/128
(1/2)^x = (1/2)^7
x =7
x
log N = x ⇔ b = N
b
1)log 1/4 =x
2
⇔ 2^x =1/4
2^x = (2)^(-2)
x = -2
2)log 4 =x
1/2
⇔ (1/2)^x = 4
2^(-x) = 2^2
-x =2
x = -2
3)log 1/32=x
2
⇔ 2^x = 1/32
2^x = (2)^-5
x = -5
4)log 1/27=x
3
⇔ 3^x = 1/27
3^x = (3)^(-3)
x = -3
5)log 2=x
1/32
⇔ (1/32)^x = 2
2^(-5x)=2
-5x =1
x = -1/5
6)log 1/81= x
1/3
⇔ (1/3)^x = 1/81
(1/3)^x = (1/3)^4
x =4
7)log 2=x
1/2
⇔ (1/2)^x = 2
2^(-x) = 2
-x =1
x = -1
8)log 1/128 =x
1/2
⇔ (1/2)^x = 1/128
(1/2)^x = (1/2)^7
x =7
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