12-5 SIGMA NOTATION AND THE NTH TERM
Σ – (sigma) means to add
You can write a series in sigma notation:
k= max value n= starting value= expression
Rewrite the expression in standard form then find the sum
1)
2)
∑𝑟=1
3
( 12+4𝑟)
∑𝑛=2
4
(𝑛2−3)
Express the series in sigma notation:4) 15 + 24 + 35 + 48 + …+143
5)
! – (factorial) The product of an integer and all the integers less than it (ex: 5!= 5 *4*3*2*1)
Express the series using sigma notation:
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