How do you find the range of f(x) = 2x² if {-2, -2, 0, 1/2}?

2 Answers
Daniel H.
Feb 6, 2018

The range is the set of y values

Explanation:

Simply plug in all of your domain (x) values into your equation and calculate each y value. Be sure to use parenthesis correctly.

Example: 2(-2)^2=2*4=8

Jim G.
Feb 6, 2018

y in{8,0,1/2}

Explanation:

"the range is the corresponding values of y for the "
"given values of x in the domain"

"domain is "x in{-2,0,1/2}

rArrf(color(red)(-2))=2(color(red)(-2))^2=2xx4=8

rArrf(color(red)(0))=2(color(red)(0))^2=0

rArrf(color(red)(1/2))=2(color(red)(1/2))^2=2xx1/4=1/2

"range is "y in{8,0,1/2}

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