Problem 48E

Summation notation Write the following power series in summation (sigma)notation.

Solution 48E

Step 1:

We write the general term of the series as follows,

Taking part into consideration, we see

For , term =

Taking denominator part into consideration, we see

For , denominator =

Taking signs into consideration, we see

For , signs varies as

Now, we write the as

Hence we write the series in sigma notation as : .