Given the series m1 to infinity of 3m4m3m5 estimate the erro

Given the series m=1 to infinity of 3m/(4^m(3m+5)) estimate the error in using the partial s8 by comparison with series m=9 to infinity 1/4^m


The answer is R8< 0.0000051

Solution

Given the series m=1 to infinity of 3m/(4^m(3m+5)) s8 = 0.0000126279633620 series m=9 to infinity 1/4^m is 5.0862630208333333333333333333333333333333333333... × 10^-6 so error = 7.541700341166666666666666666666666666666666666... × 10^-6 so R8 <0.0000051
Given the series m=1 to infinity of 3m/(4^m(3m+5)) estimate the error in using the partial s8 by comparison with series m=9 to infinity 1/4^m The answer is R8&l

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