How to calculate this question?Plz explain step by step.
(1/2)^888 (-2)^887=
a. -2
b. -0.5
c. 0
d. 0.5
Maths problem
2009-04-15 6:32 pm
回答 (1)
2009-04-15 6:52 pm
✔ 最佳答案
(1/2)^888 (-2)^887=
a. -2 b. -0.5 c. 0 d. 0.5
sol
(1/2)^888*(-2)^887
=[(1/2)^888]*[- (2^887)]
=-[(1/2)^888]* (2^887)
=-[2^(-888)]*(2^887)
=-2^(-888+887)
=-2^(-1)
=-1/2
=-0.5
(b)
收錄日期: 2021-04-24 23:57:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090415000051KK00502