what is log x=-1.9

Question

learning logarithims

Answer 1

Whenever you have a logarithmic equation such as  log x=-1.9, you use both sides of the equation as exponents, on the appropriate base.

 

In this case, use 10 (common logarithms).

 

10^{log x} = 10^-1.9

 

On the left side, exponentiation (base ten) and common log are INVERSE OPERATIONS, so you just get

x = 10^-1.9 or = 1/10^1.9 = 0.012589