
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
Consider a $2 \times 2$ matrix $\mathbf{A}$ that corresponds to a transformation combining a dilation with a scale factor of 3 and a rotation by $90^\circ$ counterclockwise, both centered at the origin. Find $\det \mathbf{A}$.

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