# Question #8be2a

##### 1 Answer

#### Explanation:

Consider the sum of the terms,

The function

In simple terms,

Take note of the first term given in the sum.

So,

Another important identity of

So,

Replacing the term for

Feb 12, 2017

Consider the sum of the terms,

The function

In simple terms,

Take note of the first term given in the sum.

So,

Another important identity of

So,

Replacing the term for