Express of the complex number in the form `a + i b`.
`(1/3+3i)^3`

Explanation

To express the complex number \((\frac{1}{3} + 3i)^3\) in the form \(a + ib\), we will follow these steps:

### Step 1: Identify \(a\) and \(b\)
Let \(a = \frac{1}{3}\) and \(b = 3\).

### Step 2: Use the Binomial Theorem
We will use the binomial expansion for \((a + b)^3\):
\[
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