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Find the domain of f(x)=x3x,xR, the ...

Find the domain of f(x)=x3x,xR, the set of real numbers.

A.

x:xR,x3

B.

x:xR,x1

C.

x:xR,x0

D.

x:xR,x3

Correct answer is A

f(x)=x3x

f(x) has a defined value except at x = 3 where the function is undefined.