
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
Solve the differential equation \(2 x \, dx - \frac{dy}{\cos^2 y} = 0\). Also, find the particular solution that satisfies the initial condition \(y = 0\) when \(x = 0\).

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