Gayatri A. answered • 02/18/20

Experienced Science Tutor

A^{1 }is always the first term.

A^{n} is the current term.

A^{n-1} is the previous term.

A^{n+1 }is the next term.

I hope this helps!

Mark M.

The indices are correct, yet they should be subscripts.02/18/20

Eva M.

thank you very much!02/18/20