ƚ  [ 5 .   & & MathType-nDTimes New Romanww 0wf-2 7y2 n 5y2 |5y2 ny1ySymbol Ҡww 0wf-2 `=y2 `H-yTimes New Romanww 0wf-2 `Lxy & "Systemקf !-