Formula_21279

\[\begin{gathered}(1-x)^{\frac{\alpha}{2}+\frac{1}{4}}(1+x)^{\frac{\beta}{2}+\frac{1}{4}}\left|\hat{P}_{n}(x ; \alpha, \beta)\right| \leqslant c_{1}, \\x \in[-1,1],\end{gathered}\]