🚀 go-pugleaf

Witam!
Mam problem z obliczeniem takiego wyrażenia:

Próbowałem to rozbić na n ciągów geometrycznych w których każdy ma stałe q - 
cos 'alfa' a później obliczając granicę próbowałem dodać sumy tych ciągów 
geometrycznych ale to chyba jest zły sposób, bo nie mogłem później obliczyć 
granicy z wyrażenia n*cos^n 'alfa'. Jak ktoś wie jak to zrobić to prosiłbym 
o pomoc.
Z góry dziękuję.
Pozdrawiam 


begin 666 clip_image001.gif
M1TE&.#EA3 `<`/<``````/___P``````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M````````````````````````````````````````````````````````````
M`````````````````````"'_"TU33T9&24-%.2XP%P````MM<T]035-/1D9)
M0T4Y+C!"/*3U`"'_"TU33T9&24-%.2XP& ````QC;5!02D-M<# W,3(````#
M2 !SO `A^00!```!`"P`````3 `<```(VP`#"!Q(L*#!@P@3*ES(L*'#AQ C
M2IPH$ #%@Q8O:JRXT6#&CA(_@APH<B3#DB8#H$R)D27!E2Y)?@1 $V9(FRYG
M9J0Y$F=*GAQ)]H194R;"FD4][A0)5&5)I$@QK@1J,>E+GQ677C5Z%>I4E$V=
M@L6:M2S7EBJ#2E5:,*S:DUK/)MPY=VS;L5Z_FMT[]^U=MG*%.J3*U"?5NH#Y
M!D;\%NMAO8!YTEU\E&M8MTVMOJQ+&&_4M5DQ7]8).F;BA63;FNY[<F+JGZA=
5KXX->S9MD*]MZ][-N[?OWRX#`@`[
`
end