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Misha Larkins [42]
3 years ago
8

HELP ME PLEASEEEEEEEEEEEEEEEEE

Mathematics
2 answers:
ivolga24 [154]3 years ago
8 0

Answer:

x

Step-by-step explanation:

f(f^{-1}(x))

Lets work the brackets first!

f^{-1}(x)

To solve we are going to find the inverse of the function.

f^{-1}(x)

f ⇔ y

∴ y = x

Interchange x and y

x = y

Solve for y

y = x

∴ f^{-1}(x) = x

Now let's solve the rest of the equation.

f(x) = x

∴ f(f^{-1}(x)) = x

katrin2010 [14]3 years ago
6 0
The answer is just x
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Answer:

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Step-by-step explanation:

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If we call F the distance that the freight train travels and we call E at the distance that the express train travels, we must have the distance between them after 15 minutes it must be 30 miles.

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We also know that:

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