Friday, December 13, 2013

What is x if log(x) (1/8) = -3/2.

Given that log(x) (1/8) =
-3/2


We need to find the values of
x.


==> Let us
simplify.


First we will rewrite (1/8) =
(1/2)^3


==> (1/2)^3 =
2^-3


==> log(x) 2^-3 =
-3/2


Now we know that log a^b = b*log
a


==> log(x) 2^-3 = -3*log(x) 2 =
-3/2


We will divide by
-3.


==> log(x) 2 = -3/2*-3 =
1/2


Now we will rewrite using exponent
form.


==> x^1/2 = 2


We
will square both sides.


==> x =
4

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