
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 the universal set as $R$, set $M=\{x|(x+a)(x-1)\leqslant 0\}(a > 0)$, and set $N=\{x|4x^{2}-4x-3 < 0\}$.
(1) If $M\cup N=\{x|-2\leqslant x < \frac {3}{2}\}$, find the value of real number $a$;
(2) If $N\cup (\lnot_{R}M)=R$, find the range of values for $a$.

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