If \( \displaystyle \lim_{x \to 0} \frac{\sin^{-1}x - \tan^{-1}x}{3x^3} \) is equal to \( L \), then the value of \( (6L + 1) \) is:
If \( \int \dfrac{dx}{(x^2 + x + 1)^2} = a \tan^{-1}\!\left( \dfrac{2x + 1}{\sqrt{3}} \right) + b \left( \dfrac{2x + 1}{x^2 + x + 1} \right) + C,\ x > 0 \) where \( C \) is the constant of integration, then the value of \( 9(\sqrt{3}\,a + b) \) is equal to __________.
