SOLUTION: The perimeter of a square depends on the length of its sides. Find the domain of this function in the given context. Please help me with this question. Thank you!!

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Question 976986: The perimeter of a square depends on the length of its sides. Find the domain of this function in the given context.
Please help me with this question. Thank you!!
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
x= length of the side (in whatever units it is measured).
f%28x%29=4x= perimeter (measured in the same units).
The domain of a function is the set of x values for which that function is defined.
In this situation, x=0 does not make sense,
and x%3C0 does not make sense as the length of the side of a square, either.
In this situation, x must always be a positive real number,
and any positive real number will do.
The set of x values for which f%28x%29 is defined is all the positive real numbers, so
the domain of f%28x%29 is the set of all the positive real numbers.