Question 35499
First, factor 972 into prime factors.  
{{{972 = 9*108 = 9* 9 *12= 3^2*3^2*3*4 = 3^5*2^2}}}


Now, {{{log (root(3,972))}}}
{{{log (972^(1/3))}}}


{{{(1/3)* log 972}}}


{{{(1/3) * log (3^5*2^2) }}}


{{{ (1/3)* (log (3^5) + log (2^2) ) }}}


{{{ (1/3) * (5 log 3 + 2 log 2) }}}


{{{ (5 log 3 + 2 log 2)/3}}}


{{{ (5b+ 2a) /3 }}}


R^2 at SCC