求a
T= x/2 [2a+(n-1)d]
求π
C=4/3π.r^3
求b
a^2 =b^2 +c^2
求a
S= a(1-r^n)/1-r
求v
1/b+1/x=g
收錄日期: 2021-04-23 20:34:58
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081025000051KK00769