计算:(1/100-1)(1/99-1)(1/98-1)…(1/4-1)(1/3-1)(1/2-1)= _ .
问题描述:
计算:(
-1)(1 100
-1)(1 99
-1)…(1 98
-1)(1 4
-1)(1 3
-1)= ___ .1 2
答
∵(
-1)(1 100
-1)(1 99
-1)…(1 98
-1)(1 4
-1)(1 3
-1)1 2
=-
×(-99 100
)×(-98 99
)×…×(-97 98
)1 2
=-
.1 100
故答案为:-
.1 100