
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 graph of the function $f(x)=a^{x-1}-2$ $(a > 0,a\neq 1)$ always passes through a fixed point $A$. If point $A$ lies on the line $mx-ny-1=0$, where $m > 0$, $n > 0$, determine the minimum value of $\dfrac {1}{m}+ \dfrac {2}{n}$.

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