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Mathematics
Problem
The series
∑
k
=
1
∞
1
k
3
\displaystyle\sum_{k=1}^{\infty}\frac{1}{k^{3}}
k
=
1
∑
∞
k
3
1
converges to a sum
S
S
S
. Let
S
5
=
∑
k
=
1
5
1
k
3
S_5=\sum_{k=1}^{5}\frac{1}{k^{3}}
S
5
=
∑
k
=
1
5
k
3
1
. What is the largest value that the error
∣
S
−
S
5
∣
|S-S_5|
∣
S
−
S
5
∣
can take? a)
4.0
×
10
−
2
4.0\times10^{-2}
4.0
×
1
0
−
2
b)
2.0
×
10
−
2
2.0\times10^{-2}
2.0
×
1
0
−
2
c)
1.4
×
10
−
2
1.4\times10^{-2}
1.4
×
1
0
−
2
d)
4.6
×
10
−
3
4.6\times10^{-3}
4.6
×
1
0
−
3
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