
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 $(2x-1)^{2015}=a_{0}+a_{1}x+a_{2}x^{2}+…+a_{2015}x^{2015} (x \in R)$, calculate the value of $\dfrac {1}{2}+ \dfrac {a_{2}}{2^{2}a_{1}}+ \dfrac {a_{3}}{2^{3}a_{1}}+…+ \dfrac {a_{2015}}{2^{2015}a_{1}}$

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