▽??〓???(10?) ▽??〓???????, ?????(10?, ??) ▽??〓?????(10?, ??) ▽??
▽??= ???(10?·??? ???) ▽?? = ???????(10?·??) ▽??= ????????(10?.??)
▽??=????(10?) ▽??=?????(10?, ??) ▽??=??????(10?) ??????(15?) ▽??=???
▽??〓???(10?, ??) ????(15?, ???) ▽??〓??·??????? ? ??????(10?, ??)
▽??=??????, ??????(10?, ??) ?????, ?????(14?) ▽??=??·??·??????? ?
▽??=????, ????(10?) ????, ????(14?) ▽??=??·??·??????? ? ??????(10
▽??〓????, ????, ????(10?, ????) ????, ????, ????(10?, ????) ▽??〓
▽??????=??????(10?) ???????(10?) ▽??=???????(10?) ???????(17?) ▽??=
▽????=?????(10?), ????????????(15?) ▽??=???????, ?????(10?) ▽???