
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 that the function $f(x)$ is an odd function defined on $[-4,4]$, and satisfies: $f(-1)=-2$; when $0 < x \leq 4$, $f(x)=x^{2}-ax$.  
$(1)$ Find the value of $a$;  
$(2)$ Find the analytical expression of the function $f(x)$;  
$(3)$ Solve the inequality $f(m-1)+f(2m+1) \geq 0$.

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