
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 $f(x)=|x+a|+|x-a|$, where $a\in \mathbb{R}$.
- (Ⅰ) If $a=1$, find the minimum value of the function $f(x)$.
- (Ⅱ) If the solution set of the inequality $f(x)\leqslant 5$ is $A$ and $2 \notin A$, find the range of values for $a$.

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