How do you find the domain of #sqrt(x+7 )#?

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Answer 1 · 2017-12-31T11:22:11

#D_f=[-7,oo)#

here, #x+7>=0#

So, #x>=-7#

#D_f=[-7,oo)#

Answer 2 · 2017-12-31T11:25:30

#x inRR,x>=-7#

#x+7>=0#

#rArrx>=-7#

#"domain is "x inRR,x>=-7#
graph{sqrt(x+7) [-10, 10, -5, 5]}