4. Calcule o valor de x em: a)log1/2 2=x b)log1/2 4=x c)log1/2 8=x d)log1/2 16=x
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a) log 1/2 2 = x log 1/2^x=2^1 2^-1x=2^1 -1x=1(-1) x=1/1 x=1
b)log 1/2 4=x log1/2^x=4 1/2^x=2^2 2^-1x=2^2 -1x=2(-1) x=-2
c)log 1/2 8=x log1/2^x=8 1/2^x=2^3 2^-1x=2^3 -1x=3(-1) x=3
d)log 1/2 16=x log1/2^x=16 1/2^x=2^4 2^-1x=2^4 -1x=4(-1) x=-4
b)log 1/2 4=x log1/2^x=4 1/2^x=2^2 2^-1x=2^2 -1x=2(-1) x=-2
c)log 1/2 8=x log1/2^x=8 1/2^x=2^3 2^-1x=2^3 -1x=3(-1) x=3
d)log 1/2 16=x log1/2^x=16 1/2^x=2^4 2^-1x=2^4 -1x=4(-1) x=-4
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