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# P2 functions watch

1. (Original post by mik1a)
eg.

f(x) = 1/x

Domain of f(x):

f(x) < 0
f(x) > 0
Surely the domain would be

x < 0
x > 0

I thought the domain is the set of numbers which the function 'maps' onto the range...
i.e. the set of values of x which are mapped onto f
correct me if I'm wrong
2. (Original post by kimoni)
Surely the domain would be

x < 0
x > 0

I thought the domain is the set of numbers which the function 'maps' onto the range...
i.e. the set of values of x which are mapped onto f
correct me if I'm wrong
i think that was what mik1a was meant to say...
alternativley, you could say (for the example above) that 'x' belongs to the set of real numbers (xER), where x =/= 0 (x is not equal to 0)

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Updated: June 19, 2004
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