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| 1. |
\begin{array} { l } { \text { Find the smallest positive number } \mathrm { p } \text { for which the } } \\ { \text { equation } } \\ { \cos ( p \sin x ) = \sin ( p \cos x ) \text { has a solution } \mathrm { x } \in [ 0,2 \pi ] } \end{array} |
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