Question
Asked Oct 17, 2019

How find the domain of composite function? 

V9x +3 and g(x) = V9x- 7.
6.
Find the domain of (fg) (x) when f(x)
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V9x +3 and g(x) = V9x- 7. 6. Find the domain of (fg) (x) when f(x)

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Step 1

Function are

S(к) -N9х +3
8(х) -V9к -7
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S(к) -N9х +3 8(х) -V9к -7

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Step 2

Let us assume the domain of f(x) is A and the domain of g(x) is B.

Thus,

(f8)(x) f(x)g(x)
Domain(fg)(x)AnB
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(f8)(x) f(x)g(x) Domain(fg)(x)AnB

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Step 3

Now, finding the d...

f(x)=9x+3
For domain,9x+3 20
9x+320
9x2-3
-3
x2
x2
3
А
3
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f(x)=9x+3 For domain,9x+3 20 9x+320 9x2-3 -3 x2 x2 3 А 3

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Math

Algebra

Numbers