We start with 1st term 1/2
To get the 2nd term, we multiply the 1st term 1/2 by 2
and get the 2nd term 1.
To get the 3rd term, we multiply the 2nd term 1 by 2
and get the 3rd term 2.
To get the 4th term, we multiply the 3rd term 2 by 2
and get the 4th term 4.
To get the 5th term, we multiply the 4th term 4 by 2
and get the 5th term 8.
So the nth term is 1/2 multiplied by 2 the number of
times which is one less than the number of the term.
Subtract exponents:
Edwin
