The problem asks us to solve for $x$ in the logarithmic equation $\log_{64}(x) = -\frac{1}{2}$ by converting the equation to exponential form.

AlgebraLogarithmsExponentsEquation Solving
2025/5/1

1. Problem Description

The problem asks us to solve for xx in the logarithmic equation log64(x)=12\log_{64}(x) = -\frac{1}{2} by converting the equation to exponential form.

2. Solution Steps

To solve for xx, we need to rewrite the logarithmic equation in exponential form. The general relationship between logarithms and exponentials is given by:
logb(a)=c\log_b(a) = c is equivalent to bc=ab^c = a.
In our case, b=64b = 64, a=xa = x, and c=12c = -\frac{1}{2}.
Therefore, the exponential form of the equation is:
6412=x64^{-\frac{1}{2}} = x
Since an=1ana^{-n} = \frac{1}{a^n}, we can rewrite the left side as:
x=16412x = \frac{1}{64^{\frac{1}{2}}}
We know that a12=aa^{\frac{1}{2}} = \sqrt{a}, so 6412=64=864^{\frac{1}{2}} = \sqrt{64} = 8.
Therefore,
x=18x = \frac{1}{8}.

3. Final Answer

The final answer is 18\frac{1}{8}.

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