frenchpotaetoes2832
12.07.2019 •
Mathematics
Need some with my last problem for the night. determine the domain of tbe function (f o g)(x) where f(x) = 3x-1/x-4 and g(x) = x+1/x
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Ответ:
We are given
f(x)=
g(x)=
\to find f o g, replace all the x in f(x) with g(x)
= Simplify by taking least common denominator and reciprocal.
Taking the least common denominator, we get
Taking reciprocal, we get
Simplifying the expression, we get
To find the domain of a composite function, we need to find the domain of f o g and the first function i.e g(x)
To find the domain of f o g, equate the denominator to 0
It means, domain is all real numbers except
Domain of g(x) is all real numbers except
combined domain is
Ответ:
Copy and paste that for a correct answer
If the model is good, then both points will check in the equation. Substituting 8 for x and 5 for y in the equation results in 56 – 50 = 3, which is not true. Therefore, the model is not good. Using (–12, –9) as a check results in –84 + 90 = 3. The constant value in the equation should be 6, not 3. In slope-intercept form, the y-intercept should be –3/5.