
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
The function $f(x)$ is an even function defined on $\mathbb{R}$, and satisfies the condition $f(x+2)=-\dfrac{1}{f(x)}$ for all $x$. If $f(x)=x$ for $-3 \leqslant x \leqslant -2$, then find $f(2018)$.

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