是求 (1∕100—1)×(1∕99—1)×(1∕98-1)×……×(1∕2-1)?
=-(1-1/100)(1-1/99)(1-1/98).x(1-1/3)(1-1/2)
=-99/100x98/99x97/98x.x2/3x1/2
=-1/100
是求 (1∕100—1)×(1∕99—1)×(1∕98-1)×……×(1∕2-1)?
=-(1-1/100)(1-1/99)(1-1/98).x(1-1/3)(1-1/2)
=-99/100x98/99x97/98x.x2/3x1/2
=-1/100