If you write \{a\}, you'll obtain .
b. { }
It is not convex. Choose:
.
Fernando Revilla
How can I determine if a set is convex without graphing it?
I have that a set, , is convex if, given any two points, , the line connecting them is entirely within , or:
Some of the sets in question:
b.
c.
d.
e.
f.
I have to hand in f. I'm not good enough to draw it, but I can envision it. It looks like a "V" going from down to . Clearly, it is not convex. But how would I show that mathematically?
Thanks.
If you write \{a\}, you'll obtain .
b. { }
It is not convex. Choose:
.
Fernando Revilla