Respuesta :

For the series:
- 5 + ( - 1 ) + 3 + 7 + 11
common difference between the numbers is 4 and a 1 = -5
The series in sigma notation:
  4
  ∑   ( 4 i - 5 )
i =0

Answer:

5

∑(4j-9)

J=1

Step-by-step explanation: