
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 $$f(x)=2\cos^{2}x-\cos\left(2x+ \frac {\pi}{2}\right)$$  
(Ⅰ) Find the value of $$f\left( \frac {\pi}{8}\right)$$;  
(Ⅱ) Find the smallest positive period and the intervals of monotonic decrease for the function $f(x)$.

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