sab562
sab562
29-07-2016
Mathematics
contestada
which function below is the inverse of f(x) = x^2-9
Respuesta :
apologiabiology
apologiabiology
29-07-2016
to find the inverse
replace f(x) with y
switch all x and y
solve for y
replace y with f⁻¹(x)
f(x)=x^2-9
y=x^2-9
x=y^2-9
x+9=y^2
sqrt both sides
[tex] \sqrt{x+9} [/tex]
replace
f⁻¹(x)=[tex] \sqrt{x+9} [/tex]
that is the inverse
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