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Question

4)Express the series below in summation notation for the specified number of terms.

b. 10 + 14 + 18 + 22

c. 

 

Answer 1

Step 1:

(4b)

The series is .

The sum can be written as .

The sum has 4 terms, each of the form , and starts at and ends at .

The summation notation of is .

.

Step 2:

(4c)

The series is .

The sum can be written as .

The sum has 5 terms, each of the form , and starts at and ends at .

The summation notation of is .

.

Solution :

(4b) .

(4c) .