\i-. II. II = IO;i; i\= 6,0 +...; iM = 2 PI. 



k:\ 



i\r. 12. H = 10,2 + PI.; N = 8,0 + ... ; M = 2' K. + PI. 



Nr. 13. H = 10,2 + PI.; N = S,0 + ...; M = 2 P 



