How do you find domain and range for y=3x^2?

1 Answer
Trevor Ryan.
Oct 25, 2015

Domain = RR
Range = [0,oo)

Explanation:

Since this is a 2nd degree quadratic function, it implies its graph is a parabola and in this case with axis of symmetry at x=0 and y-intercept of 0, with the arms going up.

Therefore the domain is all real values for x, ie RR=(-oo,oo)

The range is all y values greater than or equal to zero, ie y in[0,oo)

Related questions
See all questions in Domain and Range of a Function
Impact of this question
7837 views around the world
You can reuse this answer
Creative Commons License