SOLUTION: Find the range of each function for the given domain. 20.) f(x)=x^2+x-2;{-2,0,1}

Algebra ->  Algebra  -> Expressions-with-variables -> SOLUTION: Find the range of each function for the given domain. 20.) f(x)=x^2+x-2;{-2,0,1}      Log On

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Question 110963This question is from textbook texas algebra 1
: Find the range of each function for the given domain.
20.) f(x)=x^2+x-2;{-2,0,1}This question is from textbook texas algebra 1

Answer by MathLover1(3376) About Me  (Show Source):
You can put this solution on YOUR website!

by the definition, the range of f is the set of all values that the function takes when x takes values in the domain.
so, the range of f%28x%29=x%5E2%2Bx-2 if x=-2,x=0,x=1 will be:
if x=-2
f%28-2%29=%28-2%29%5E2%2B%28-2%29-2
f%28-2%29=+4+-+4
f%28-2%29=+0
f%28x%29=x%5E2%2Bx-2 if x=0
f%280%29=0%5E2%2B0-2
f%280%29=+-2
f%28x%29=x%5E2%2Bx-2 if x=1
f%28x%29=1%5E2%2B1+-2
f%28x%29=1%2B1+-2
f%28x%29=2+-2
f%28x%29=+0