Notasi sigma 5∑n=18(n+2)−3∑n=18(n−1)5\sum_{n=1}^8\left(n+2\right)-3\sum_{n=1}^8\left(n-1\right)5∑n=18(n+2)−3∑n=18(n−1) sama dengan ∑n=18f(n)\sum_{n=1}^8f\left(n\right)∑n=18f(n). Nilai f(n)f\left(n\right)f(n) yang tepat adalah ....
2n+12n+12n+1
2n+132n+132n+13
8n+18n+18n+1
8n+78n+78n+7
8n+138n+138n+13