Question

Write each series in a summation notation

a) 2/4 +2/9 + 2/16 + 2/25 + 2/36
b) –2 + 4 – 6 + 8 – 10 + 12
c)1 + 1/4 + 1/9 + 1/16 + 1/25
d) –3 + 6 – 9 + 12 – 15
e) 1 + 10 + 100 + 1000 + 10,000
f) 100 + 95 + 90 + 85 + 80

Answer 1

a)...... sum of (n/n^2) from 2 to 6

Answer 2

\[\sum_{2}^{6}\frac{ n }{ n ^{2} }\]