Simplify the expression 1/((1+S')^(n-1)) given that S' = i.

Let's solve this by following the initial steps and correctly simplifying the expression.

Step 1: Identify the given expression and assumption.
The expression to be simplified is:

$$\frac{1}{(1+S')^{n-1}}$$

The assumption provided is:

$$S' = i$$

Step 2: Substitute the assumption into the expression.
Substitute $S'$ with $i$ in the given expression:

$$\frac{1}{(1+i)^{n-1}}$$

Step 3: (Optional) Rewrite the expression using negative exponents.
Using the property $\frac{1}{x^a} = x^{-a}$, the expression can also be written as:

$$$$