Given the Series $\sum _ { m = 1 } ^ { \infty } \frac { 3 m } { 4 ^ { m } ( 3 m + 5 ) }$

question 92

Multiple Choice

Given the series $\sum _ { m = 1 } ^ { \infty } \frac { 3 m } { 4 ^ { m } ( 3 m + 5 ) }$ estimate the error in using the partial sum $s _ { 8 }$ by comparison with the series $\sum _ { m = 9 } ^ { \infty } \frac { 1 } { 4 ^ { m } }$ .

• A) \(R _ { 8 } \leq 2.6130051\)
• B) \(R _ { 8 } \geq 0.0000052\)
• C) \(R _ { 8 } \leq 0.0000051\)
• D) \(R _ { 8 } \geq 0.0000051\)
• E) \(R _ { 8 } \leq 0.000005\)

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The degree to which a job involves a range of different activities requiring various skills and talents.

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