Question 955474

Evaluate the expression:

{{{ log (1/(sqrt(100000))) }}}

Thanks
<pre>{{{log (1/sqrt(100000))}}} -------- Logarithmic form
{{{10^a = 1/sqrt(100000)}}} ------ Exponential form
{{{10^a = 1/100000^(1/2)}}}
{{{10^a = 100000^(- 1/2)}}}
{{{10^a = (10^5)^(- 1/2)}}}
{{{highlight(highlight(10^a = 10^(- 5/2)))}}}
{{{highlight_green(a = - 5/2)}}}, or {{{highlight_green(a = - 2.5)}}}