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Mathematics
Mathematics
Problem
Identify the correct sigma notation for the sum
7
+
7
+
7
+
7
7+7+7+7
7
+
7
+
7
+
7
. a)
∑
k
=
1
4
7
k
\displaystyle\sum_{k=1}^{4} 7k
k
=
1
∑
4
7
k
b)
∑
k
=
1
7
k
\displaystyle\sum_{k=1}^{7} k
k
=
1
∑
7
k
c)
∑
k
=
1
4
7
\displaystyle\sum_{k=1}^{4} 7
k
=
1
∑
4
7
d)
∑
k
=
0
3
(
7
+
k
)
\displaystyle\sum_{k=0}^{3} (7+k)
k
=
0
∑
3
(
7
+
k
)
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