
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 $$f(x)= \frac {x}{e^{x}}, f_{1}(x)=f'(x), f_{2}(x)=[f_{1}(x)]', …, f_{n+1}(x)=[f_{n}(x)]', n\in\mathbb{N}$$, according to this pattern, $f_{n}(x)=$ \_\_\_\_\_\_.

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