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Irina-Kira [14]
2 years ago
8

Express each sum in sigma-notation 1 + 1/4 + 1/9 + 1/16 + ... + 1/400

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
7 0

9514 1404 393

Answer:

  \displaystyle\sum\limits_{n=1}^{20}{\dfrac{1}{n^2}}

Step-by-step explanation:

We notice that the denominator of each term is the square of the term number, so the last term must be the 20th. The sum is then ...

  \displaystyle\sum\limits_{n=1}^{20}{\dfrac{1}{n^2}}

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