2. Which answer represents the series in sigma notation?
Thank you! Just need help understanding this practice problem
The common difference is 5
The first term is -7 = a1
Notice that, the jth term is given by :
aj = a1 + 5(j - 1)
aj = -7 + 5j - 5
aj = -12 + 5j
aj = 5j - 12
Do you see the correct answer, based on this ????