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Alex777 [14]
3 years ago
13

What is the range of the function y = 2x2 + x - 1 when the domain is {-2, -1, 0, 1}?

Mathematics
1 answer:
Kobotan [32]3 years ago
6 0

If we transform each of the points we have

f(-2)=2(-2)^2+(-2)-1 = 8-2-1=5

f(-1)=2(-1)^2+(-1)-1 = 2-1-1=0

f(0)=2(0)+0-1=0+0-1=-1

f(1)=2(1)^2+(1)-1 = 2+1-1=2

The range is simply the set of all possible outputs.

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