Asked by Lydia
If
g(x) = x2 + 8x
with
x ≥ −4,
find
g−1(20)
g(x) = x2 + 8x
with
x ≥ −4,
find
g−1(20)
Answers
Answered by
Steve
when does g(x)=20?
When x=2
So, g^-1(20) = 2
Note that g(-10) = 20 as well, but that does not matter, since we have restricted our domain to x >= -4.
When x=2
So, g^-1(20) = 2
Note that g(-10) = 20 as well, but that does not matter, since we have restricted our domain to x >= -4.
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