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crimeas [40]
3 years ago
6

Given f(x)=x^2+3 and g(x)=x+5/x. Find (g o f)(4)

Mathematics
1 answer:
arlik [135]3 years ago
3 0
To find g(f(4)), work from the inside out.

f(4) is 4^2+3, or 16+3, or 19.  Now, we must find g(19).

This is 19+5/19.  This is already a mixed number, though if you want an improper fraction solution, we have:

361/19+5/19

Which simplifies to:

366/19

Therefore, 366/19 is the answer.
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