and
q
2
i=1
(2i + 5) = (2*1 + 5)(2*2 + 5) = (7)(9) = 63
Product notation occurs less often than summation notation, but there are still
special cases to note:
1. q
q
i=p
0 = 0
(the product of all 0s equals 0)
2. q
q
i=p
1 = 1
(the product of all 1s equals 1)
808
Summation and Product Notation