$\displaystyle\lim_{x \to 0}\left[\dfrac{\log|2 + x| - \log|2 - x|}{\tan x}\right] = $ .......

Consider the statement patterns
A. $(q \rightarrow p) \vee (p \rightarrow q)$
B. $(\sim p \vee \sim q) \leftrightarrow \sim (p \wedge q)$
C. $[(p \vee q) \wedge \sim p] \wedge \sim q$
D. $(p \wedge q) \wedge (\sim p \vee \sim q)$
then statement patterns

The statement pattern $(p \wedge q) \rightarrow (r \vee \sim s)$ is false. Then the truth values of $p, q, r$ and $s$ are respectively

In a triangle ABC, with usual notations if $\dfrac{s-a}{11} = \dfrac{s-b}{12} = \dfrac{s-c}{13}$ and $\lambda \tan^2 \dfrac{A}{2} = 455$, then $\lambda =$