Hi

f is defined on ]0,+oo[

f is increasing on ]0,1] and decreasing on [1,+oo[

The limit for 0 is 0

The limit for +oo is 0

f(1) = 1

Therefore inf f = 0 and sup f = max f = 1

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- Dec 18th 2008, 12:48 AM #1

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## SUP/inf question..

i need to find the sup and the inf of

i can find the limit for the function for + infinity

and - infinity

but what to do next?

the sup is the least upper bound

the limit for +infinity is not SUP

??

- Dec 18th 2008, 10:05 AM #2

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