How do you solve log_10x=-1?

1 Answer
Jul 30, 2017

x = frac(1)(10)

Explanation:

We have: log_(10)(x) = - 1

A logarithmic number can be expressed in the following way:

" " " " " " " " " " " " " " log_(a)(b) = y <=> a^(y) = b

Using this method, we can isolate x, and hence solve the equation.

So let's do it:

Rightarrow log_(10)(x) = - 1 <=> 10^(- 1) = x

Rightarrow log_(10)(x) = - 1 <=> frac(1)(10) = x

Rightarrow x = frac(1)(10)

Therefore, the solution of the equation is x = frac(1)(10).