ƚ @ U Y .  @ &`  & MathType@-hHLy -Ty-R&R&RTimes New Romanww 0wf-2 xy2 PxySymbol #@ww 0wf-2 p=y2 0-y2 L+yTimes New Romanww 0wf-2 P2y2 H14 & "Systemf !\-