Re: functions

Posted by Dr. Strange on Apr 16, 2016; 1:24pm
URL: http://discussion-forum.276.s1.nabble.com/functions-tp7599851p7599887.html

constraint is cos(sin x) >=0
   
However value of sinx varies from -1 to 1 which is always in 1st and 4th quadrant where cos is positive

so domain is R