For the function f (x) = - 2x2, if the domain is {-3, 0, 3}, find the range.

Question

Mathematics

Emilee Woods

9 May, 12:55

For the function f (x) = - 2x2, if the domain is {-3, 0, 3}, find the range.

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Answers (1)

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Felipe Baker · Answer 1

If you're trying to find the range, simply plug in each domain to find the range, since the domain is the x-values.

f (-3) = - 2*-3*2 = 12, therefore the range for the domain - 3 is 12; (-3, 12).

f (0) = - 2*0*2 = 0, therefore the range for the domain 0 is 0; (0, 0)

f (3) = - 2*3*2 = - 12, therefore the range for the domain 3 is - 12; (3, - 12)