Final answer:
The formula for the summation of an infinite geometric sequence is S = a / (1 - r), where S is the sum of the sequence, a is the first term, and r is the common ratio.
Step-by-step explanation:
The formula for the summation of an infinite geometric sequence is given by:
S = a / (1 - r)
where S is the sum of the sequence, a is the first term, and r is the common ratio.
For example, if the first term is 2 and the common ratio is 0.5, the sum of the infinite geometric sequence would be:
S = 2 / (1 - 0.5) = 4.