
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
If $g(x)=\log \left(\frac{1+x}{1-x}\right)$, then compute $g\left(\frac{4x+x^3}{1+4x^2}\right)$ in terms of $g(x)$ for $-1<x<1$.
A) $g(x) \qquad$ B) $2g(x) \qquad$ C) $3g(x) \qquad$ D) $[g(x)]^2 \qquad$ E) $[g(x)]^3-g(x)$

Present the answer in LaTex format: \boxed{Your answer}
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