How do you solve log x = 4?

2 answers:

4 0

In order to solve this, We will want to change it into an exponential form. Assuming that since we do not have a number beside log, It will be log base 10.

10^4=x

We can now solve for x.

This means that x= 10,000

katrin2010 [14]3 years ago

3 0

Answer:

$x=10000$

Step-by-step explanation:

We want to solve the logarithmic equation;

$log(x)=4$

Since no base is written, the given logarithm is in base 10.

We can rewrite the equation as

$log_{10}(x)=4$

We take the antilogarithm of both sides to base 10 to obtain;

$10^{log_10(x)}=10^4$

This implies that;

$x=10^4$

$\Rightarrow x=10\times10 \times10 \times 10$

$\Rightarrow x=10000$

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Lets, check it.
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