Proceedings of the International scientific and practical conference ―Science, technology and art in global context‖ (October 14-16, 2025) / Publisher website: www.naukainfo.com. – Warsaw, Poland, 2025. - 72 p.

66 ( ( ) ∫ ( ) ( ) ) ( ) ( ) ( ) ( ) ( ) ( ( ) ( )) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) we have estimate ( ) * ( ∫ ( ) ( ) ) + ( ∫ ( ) ( ) ) ( ) ( ) ( ) ( ) ( ) ( ) If we put , then there is a constant ( ) , such that ( ) . Therefore, from (4) we obtain by integrating ( ( )) ( ) ( ) ∑ ,∫ ( ( ) ) ( ) ∫ ∫[ ( ) ( ) ( ( ))] ̃ ( ) ∫ ∫[ ( ) ( ) ( ( ))] ̃ ( )} ( ) Taking the expectation, we derive from (5) [ ( ( ))] ( ) ( ) Set * + for . Then by (3), ( ) * + , . Note that for every there is some such that ( ) equals either n or 1 /n . So ( ( )) { } { } It then follows from (6) that ( ) , ( ( ))- { } { }