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23.10.2020 •
Mathematics
Given f(x) = x − 7 and g(x) = x2 Find f(g(4)).
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Ответ:
9
Step-by-step explanation:
Ok so if g(x) is 2x, then I'm wrong, but if it's x squared then look below:
Since there is a 4 instead of a x in g(x), we would substitute x=4 into g(x) so:
g(x) = x^2
g(4) = 4^2
g(4) = 16
Now we would substitute x=16 into f(x):
f(x) = x - 7
f(16) = 16 - 7
f(16) = 9
So f(g(4)) is 9.
Ответ:
1
Step-by-step explanation:
First we can solve for where so we get: .
Then we put that into the . So we now have:
Ответ: