Hello This Answer Is Not Real This Is All A Simulation
A function you can perform on a word processor BUT NOT on a typewriter is editing.
Answer:

Explanation:
Given
--- starting index
Required
Change the starting index to 
We have:

To change the starting index to k, we simply rewrite as:

<em>In this case; k=1; so, the starting index will be: </em>
<em />