mx2-(1-m)x 1>0所以2X-Y 3=0,L2:4X-2Y-1=0,L3:X Y-1=0所以a^x a^y = a^x [1 a^(y-x)] BE=BC CE=BC CA/2
说说y=k/x(k≠0)y=cosx=sin(x 丌/2)说说y=k/x(k≠0)y=cosx=sin(x 丌/2)
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