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araminaara691
22.06.2019 •
Mathematics
If f(x)=x-6/x and g(x)=x+4 and h(x)=3x-2 what is h(f(g(
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Ответ:
The answer is h(f(g(x))) =![\frac{3*(x+4)^{2}-6 }{x+4} -2](/tpl/images/1202/6761/0995b.png)
Step-by-step explanation:
Given f(x)= x-6/x
g(x) = x+4
h(x) =3x-2
We have to find h(f(g(x))) ?
Basically it is a composite function i.e.
function within a function
So now f(g(x))=f(x+4)
i.e. we are going to put x+4 in place of g(x)
f(g(x))= x+4 -![\frac{6}{x+4}](/tpl/images/1202/6761/d9af2.png)
Multiplying both sides by x+4
f(g(x)) *x+4=(x+4)
-6
Now dividing both sides by x+4
f(g(x)) =
/(x+4)
Now h(f(g(x)))= h(
)
=3(
-2
Multiplying both sides by x+4
h(f(g(x)) *(x+4) =3*
-6 -2*(x+4)
Now dividing both sides by (x+4)
h(f(g(x)) =3*
-2
Ответ: