
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
Express the following in closed form, as a function of \( x \):
$$
\sin^{2}(x) + \sin^{2}(2x) \cos^{2}(x) + \sin^{2}(4x) \cos^{2}(2x) \cos^{2}(x) + \cdots + \sin^{2}\left(2^{2010} x\right) \cos^{2}\left(2^{2009} x\right) \cdots \cos^{2}(2x) \cos^{2}(x).
$$

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