
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 a function $y=f(x)$ defined on $\mathbb{R}$ that satisfies the following three conditions: ① For any $x \in \mathbb{R}$, $f(x+2) = -f(x)$; ② For any $0 \leq x_1 < x_2 \leq 2$, $f(x_1) < f(x_2)$; ③ The graph of $f(x+2)$ is symmetric about the y-axis. Then, the relationship in magnitude among $f(4.5)$, $f(6.5)$, and $f(7)$ is.

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