Write the sum using summation notation.
-$$- 3 + 9 - 27 + 81$$
A) $\sum _ { n = 1 } ^ { 4 } ( - 1 ) ^ { n _ { 3 } n }$
B)$\sum_{n=1}^{4}(-1)^{n+1} 3^{n}$
C) $\sum _ { n = 1 } ^ { 4 } ( - 1 ) ^ { n + 1 } n$
D) $\sum _ { n = 1 } ^ { 4 } ( - 1 ) ^ { n _ { n } }$

Question

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The Answer of Write the sum using summation notation.
-$$- 3 + 9 - 27 + 81$$
A) $\sum _ { n = 1 } ^ { 4 } ( - 1 ) ^ { n _ { 3 } n }$
B)$\sum_{n=1}^{4}(-1)^{n+1} 3^{n}$
C) $\sum _ { n = 1 } ^ { 4 } ( - 1 ) ^ { n + 1 } n$
D) $\sum _ { n = 1 } ^ { 4 } ( - 1 ) ^ { n _ { n } }$

Write the Sum Using Summation Notation −3+9−27+81- 3 + 9 - 27 + 81−3+9−27+81

Write the Sum Using Summation Notation $- 3 + 9 - 27 + 81$