Find the partial sum.
-Find the sum of the first four terms of the sequence whose general term is $a _ { n } = - \frac { n } { 11 }$.
A) $\frac { 10 } { 11 }$
B) $- \frac { 10 } { 11 }$
C) $- \frac { 6 } { 11 }$
D) $\frac { 2 } { 11 }$

Question

Quizplus · Accepted Answer

The first four terms are $-\frac{1}{11}, -\frac{2}{11}, -\frac{3}{11}, -\frac{4}{11}$. Their sum is $-\frac{1+2+3+4}{11} = -\frac{10}{11}$.

Find the Partial Sum an=−n11a _ { n } = - \frac { n } { 11 }an​=−11n​

Find the Partial Sum $a _ { n } = - \frac { n } { 11 }$