\[\boxed{\mathbf{46}\mathbf{.}}\]
\[\textbf{а)}\ y = \sin x;\ \ x \in R\]
\[y^{'} = \cos x.\]
\[\textbf{б)}\ y = \cos x;\ \ x \in R\]
\[y^{'} = - \sin x.\]
\[\textbf{в)}\ y = tg\ x;\ \ x \neq \frac{\pi}{2} + \pi k;\ \ k \in Z\]
\[y^{'} = \frac{1}{\cos^{2}x}.\]
\[\textbf{г)}\ y = ctg\ x;\ \ x \neq \pi k;\ \ k \in Z\]
\[y^{'} = - \frac{1}{\sin^{2}x}.\]