Re: functions

Posted by Dr. Strange on Apr 16, 2016; 12:41pm
URL: http://discussion-forum.276.s1.nabble.com/functions-tp7599851p7599884.html

both log functions have base 10

There will be two constraints: for inner log function condition is (1+x^3)>0 which gives x> -1

and outer log function gives constraint log (base 10) (1+x^3) >0
so  log (base 10) (1+x^3) > log (base 10) (1)
so 1+x^3 >0
so x>0

combining both constraints give us x belongs to (0,infinity)