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Use the Summation Formulas to Rewrite the Expression k=1n24k(k1)n7\sum _ { k = 1 } ^ { n } \frac { 24 k ( k - 1 ) } { n ^ { 7 } }

Question 79

Multiple Choice

Use the summation formulas to rewrite the expression k=1n24k(k1) n7\sum _ { k = 1 } ^ { n } \frac { 24 k ( k - 1 ) } { n ^ { 7 } }
without the summation notation.


A) 4n51n6\frac { 4 } { n ^ { 5 } } - \frac { 1 } { n ^ { 6 } }
B) 8n54n6\frac { 8 } { n ^ { 5 } } - \frac { 4 } { n ^ { 6 } }
C) 4n44n6\frac { 4 } { n ^ { 4 } } - \frac { 4 } { n ^ { 6 } }
D) 8n4+2n7\frac { 8 } { n ^ { 4 } } + \frac { 2 } { n ^ { 7 } }
E) 8n48n6\frac { 8 } { n ^ { 4 } } - \frac { 8 } { n ^ { 6 } }

Correct Answer:

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