
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
Given the function f(x) = (sin x + cos x)^2 + 2cos^2 x - 2.
(1) Find the interval where the function f(x) is monotonically increasing.
(2) When x belongs to the interval [$$\frac {π}{4}$$, $$\frac {3π}{4}$$], find the maximum and minimum values of the function f(x).

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