GIF89av@@@,v0I8 BH](@J׾M C Z b$@n9hh[BPd\F:pl AFtP4%0`sv BpyC@a_v XL0nX.bSQ~C\ZU dgfZ \"N}wAũ[[. D&Av57[t 14)ۇ-5vS֓%0ݾwdÇ#J|! MathType001$ xy=-yx;