Concatenating element- what the different?

What is the different between those code:

NewVector=[Vector1,element,vector2];

and

NewVector=[Vector1:element:vector2];

Answer 1

[James Tursa]

E.g.,

[1,3,10] is a three element vector with the elements 1, 3, and 10.

[1:3:10] uses the colon operator and is a four element vector starting with 1 and counting by 3 until 10 is reached or exceeded, so it has the elements 1, 4, 7, 10.

http://www.mathworks.com/help/fixedpoint/ref/colon.html