Question

Locate the absolute extrema of the function (if any exist) over each interval.
f(x)= 5-x
a)[1,4]
b)[1,4)
c)(1,4]
d)(1,4)

Answer 1

b)[1,4)

Answer 2

It's not multiple choice, you have to find the extrema for each one.

Answer 3

Since f is a line sloping downwards it's obvious...
For a, abs max is at x=1, abs min is at x=4
For b, abs max is at x=1, no abs min (because x=4 is not included in the interval).
can you do the rest?