Question

Use summation notation to write the series 6.6 + 15.4 + 24.2 + ... for 5 terms

Answer 1

For the first five terms of given series 6.6 + 15.4 + 24.2 + ... we can write it as
`\sum _(n=1)^5\left(-2.2+8.8n\right)`

Explanation:

Given series 6.6 + 15.4 + 24.2 + ...

We have to write the summation notation to write the series 6.6 + 15.4 + 24.2 + ... for 5 terms

Consider the given series 6.6 + 15.4 + 24.2 + ...

We will find a pattern for the given series

6.6 can be written as (-2.2+8.8(1))

15.4 can be written as (-2.2+8.8(2))

24.2 can be written as (-2.2+8.8(3))

And so on

Thus, for the first five terms, we can write it as
`\sum _(n=1)^5\left(-2.2+8.8n\right)`