What are the domain and range of #Y=3x^2# ?

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Answer 1 · 2017-11-05T03:39:34

Domain: #(-oo,+oo)# Range: #[0,+oo)#

#Y=3x^2#

#Y# is defined #forall x in RR -># Domain of #Y# is #(-oo,+oo)#

#x^2 >=0 forall x in RR#

#:. Y >=0 forall x in RR#

Hence the Range of #Y# is #[0,+oo)#

We can conclude the domain and range for the graph of #Y# below.

graph{3x^2 [-10, 10, -5, 5]}