
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
In the Cartesian coordinate plane $(xOy)$, let $M$ be any point on the graph of the function $f(x)=\frac{x^{2}+4}{x}(x > 0)$. If lines are drawn through point $M$ perpendicular to the lines $y=x$ and $y$-axis, with their feet at points $A$ and $B$ respectively, then $\overrightarrow{{MA}}\cdot\overrightarrow{{MB}}=$____.

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