$\lim_{x \rightarrow 0} \left(\frac{ \frac{ \mathrm{d} }{ \mathrm{d}x} \left( \tan\left({2x}\right)-x \right) }{ \frac{ \mathrm{d} }{ \mathrm{d}x} \left( 3x-\sin\left({x}\right) \right) }\right)$
Find the derivative$\lim_{x \rightarrow 0} \left(\frac{ 2{\sec\left({2x}\right)}^{2}-1 }{ \frac{ \mathrm{d} }{ \mathrm{d}x} \left( 3x-\sin\left({x}\right) \right) }\right)$
Find the derivative$\lim_{x \rightarrow 0} \left(\frac{ 2{\sec\left({2x}\right)}^{2}-1 }{ 3-\cos\left({x}\right) }\right)$
Evaluate the limit$\frac{ 2{\sec\left({2 \times 0}\right)}^{2}-1 }{ 3-\cos\left({0}\right) }$
Simplify the expression$\begin{align*}&\frac{ 1 }{ 2 } \\&\begin{array} { l }0.5,& {2}^{-1}\end{array}\end{align*}$