来自刘凤翘的问题
|1.4+2又2/5|-5又1/3-|3又1/3-5|若a,b互为相反数,求a+2a+.+50a+b+2b+.+50b的值.-1/2-1/6-1/12-1/20-1/30-1/42-4+(-24)×1/6-(-7)×(-3)(1+1/2)×(1-1/2)×(1+1/3)×(1-1/3)×...×(1+1/99)×(1-1/99)
|1.4+2又2/5|-5又1/3-|3又1/3-5|
若a,b互为相反数,求a+2a+.+50a+b+2b+.+50b的值.
-1/2-1/6-1/12-1/20-1/30-1/42
-4+(-24)×1/6-(-7)×(-3)
(1+1/2)×(1-1/2)×(1+1/3)×(1-1/3)×...×(1+1/99)×(1-1/99)
1回答
2020-05-14 20:39