Hello, molimoli!

Is there any more information . . . like the first term?

I'm not familiar with the term "interation method", but I can solve it.I need to solve this using iteration method: .

. . I'll change the notation to a more convenient form (for me).

We have: .

We conjecture that is an exponential function: .

Subtract [2] - [1]: .

Multiply by 5, divide by

Factor and solve: .

Hence, the function is of the form: .

Suppose the initial term is: .

. . Then: .

Then we have:

Subtact [3] - [4]: .

Substitute into [3]: .

Therefore: .

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

In the original notation: .