What is the domain of f(x)=(1/3)^x? A. x < 0

B. x > 0

C. All real numbers

D. y > 0

Skip to content# What is the domain of f(x)=(1/3)^x?A. x < 0B. x > 0C. All real numbersD. y > 0

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Comments (3) on “What is the domain of f(x)=(1/3)^x?A. x < 0B. x > 0C. All real numbersD. y > 0”

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What is the domain of f(x)=(1/3)^x? A. x < 0

B. x > 0

C. All real numbers

D. y > 0

B

Step-by-step explanation:

There isn't any number that x can't be. Start with a graph to show how this could be so.

It is easy to see that x > 0 gives a line that goes very near the x axis. It is not quite so easy to see that it never touches the x axis. But if you recreate the graph in Desmos, you will see that is true if you spread the x's out.

It is not quite so easy to see that when x<0 the graph tips upward very quickly but again if you move the values of the axis around you will see there is no value that x cannot be.

B

Step-by-step explanation:

There isn't any number that x can't be. Start with a graph to show how this could be so.

It is easy to see that x > 0 gives a line that goes very near the x axis. It is not quite so easy to see that it never touches the x axis. But if you recreate the graph in Desmos, you will see that is true if you spread the x's out.

It is not quite so easy to see that when x<0 the graph tips upward very quickly but again if you move the values of the axis around you will see there is no value that x cannot be.

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[tex]What is the domain of f(x) = (1/3)^x ?[/tex]

I think it’s C, i hope that helps!! 🙂