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**Ranger SVO** I need a clearer definition of a bounded, continuous and closed function. The lecture Wendnsday wasnt real clear.

What I know, a function is bounded if it lives between two horizontal lines. An example would be the function f(x)=sin(x). Its bounded between 1 and -1.

I also know that its continuous, but why is it closed? What does that mean?

The function f(x)=1/x **D**=(0,1) is bounded and continuous on its **D**omain, is it closed?

A more clear explination would be greatly appreciated.