
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 line $l: \sqrt {3}x-y- \sqrt {3}=0$ intersects the parabola $y^2=4x$ at points A and B, and intersects the x-axis at point F. If $\overrightarrow {OF}=\lambda \overrightarrow {OA}+\mu \overrightarrow {OB}(\lambda \leq \mu )$, then $\frac {\lambda }{\mu }$=\_\_\_\_\_\_\_\_\_\_\_\_．

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