ƚ@ R  .  @&` & MathTypePSymbol ww 0wf-2 (ySymbol[ (ww 0wf-2 )yTimes New Romanww 0wf-2 < 6y2 H 7y2 <2y2 4y2 .3y Times New Romanww 0wf-2 -2y2 w2ySymbol ww 0wf-2 " -y2 ( +y2 -yTimes New Romanww 0wf-2 & xy2 &yy2 ^xy2 xy & "Systemf !-