Question 1080665

{{{x = log(b, (a))*log(c ,( d) )*log (d , (c))}}}......in base {{{10}}} will be


{{{x = (log( (a))/log((b))) * (log((d) )/log((c)))* (log (( c))/ log ((d)))}}}


{{{x = (log( (a))* log((d) )* log (( c)))/ (log((b))*log((c)) *log ((d)))}}}


{{{x = (log( (a))*cross( log((d) ))*cross(  log (( c))))/ (log((b))*cross( log((c))) *cross( log ((d))))}}}


{{{x = log((a))/log((b))}}}