Yes, if it is the closed interval. No, if it is the open interval.
Open
No.
aye
An open interval, usually written as (2, 4) is any number between 2 and 4 but excluding the two end points. Another way of writing it is {x : 2 < x < 4}. A closed interval includes both end points and a semi-open or semi-closed includes one but not both.
Yes, if it is the closed interval. No, if it is the open interval.
Open
No.
No, it is not.
aye
any interval subset of R is open and closed
An open interval, usually written as (2, 4) is any number between 2 and 4 but excluding the two end points. Another way of writing it is {x : 2 < x < 4}. A closed interval includes both end points and a semi-open or semi-closed includes one but not both.
There is more than one notation, but the open interval between a and b is often written (a,b) and the closed interval is written [a,b] where a and b are real numbers. Intervals may be half open or half closed as well such as [a,b) or (a,b]. For all real numbers, it is (-infinity,+infinity), bit use the infinity symbol instead (an 8 on its side).
An interval on the number scale is a set of numbers between two end-point. Thus the closed interval [a, b] comprises all number between a and b as well as the two end points. An interval is open if neither end point is included, and semi-open (or semi-closed) if one end in included and the other is not.
The open channel flow has a free or rather open surface whereas the pipe flow has a closed surface.
The open channel flow has a free surface whereas the pipe flow has a closed surface.
It requires that f(a)=f(b) where a and b are beginning and ending points. Also, it says there is a c between a and such that f'(c)=0. If f were not differentiable on the open interval, the statement f'(c)=0 would be invalid.