Write the value of `tan(2tan^-1(1/5))` .

Explanation

To find the value of \( \tan(2 \tan^{-1}(1/5)) \), we can follow these steps:

### Step 1: Let \( x = \tan^{-1}(1/5) \)
This means that \( \tan(x) = \frac{1}{5} \).

### Step 2: Use the double angle formula for tangent
We know that:
\[
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