Question 54425
find the domain. 
f(x)=sqrt(x+4),
SQRT OF NEGATIVE NUMBER DOES NOT EXIST.HENCE 
DOMAIN OF FUNCTION ....OR...X SHOULD BE SUCH THAT 
X+4>=0...THAT IS X>=-4

 g(x)=x^2
HERE THERE IS NO RESTRICTION ON X VALUE FOR THE FUNCTION TO EXIST.HENCE 
DOMAIN IS ALL REAL VALUES FOR X