ƚ`@ 1J d .1  @`&  & MathType- Times New Roman Cyrgw -2 `.y 2  cose2 `@;o 2 coseTimes New Roman Cyrgw -2 co2 n Ro2 ` OE2 <bE2 nRE2 `.ODSymbol |w|wgw -2 `x =D2 `=D & "Systemwf  -