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Goshia [24]
3 years ago
14

Determine algebraically whether the function is even, odd, or neither even nor odd. f as a function of x is equal to x plus quan

tity 4 over x.
Mathematics
1 answer:
xenn [34]3 years ago
5 0

Answer:

1) Even for first problem.

2) Neither for the second.

I really think the problem I labeled 1 is the correct interpretation but just in case you meant the latter I wrote the latter as well. The sentence translates to exactly what I have for problem number 1.

The Problem:

1) Determine if f(x)=x+\frac{4}{x} is even, odd, or neither.

2) Determine if f(x)=\frac{x+4}{x} is even, odd, or neither.

Step-by-step explanation:

f(-x)=f(x) implies f is even.

f(-x)=-f(x) implies f is odd.

So either definition says we have to plug in -x.

1)

f(x)=x+\frac{4}{x} with new input -x:

f(-x)=-x+\frac{4}{-x}

f(-x)=-x+-\frac{4}{x}

f(-x)=-(x+\frac{4}{x})

f(-x)=-f(x)

This means f is even since we got the same thing we started with.

2)

f(x)=\frac{x+4}{x} with new input -x:

f(-x)=\frac{-x+4}{-x}

f(-x)=\frac{-(x-4)}{-x}

f(-x)=\frac{x-4}{x}

This is neither the same or the opposite of what we started with.

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