多位老友,幫幫手比比面唔該,答得幾多到就幾多la~~
1. Multiplication should be always performed before division. Yes/No
2. If A is y% more than B, then B is y% less than A. Yes/No
3. The product of 2 negative numbers must be positive. Yes/No
4. The total number of vertices of a square pyramid and a pentagonal prism is 15. Yes/No
Maths yes/no question HELP!20點
2012-08-22 6:24 am
回答 (3)
2012-08-22 4:59 pm
To Pessimist：
既然你 define 咗 -5i 係負數，那這個數
-5i + 6
係正數定負數？丨
既然你 define 咗 -5i 係負數，那這個數
-5i + 6
係正數定負數？丨
2012-08-22 7:54 am
To 002, number contain "i" cannot be determined +ve or -ve.
2012-08-22 7:00 am
3 should not be a must to be correct.
e.g. (-5i)(-4i)
= -20
2012-08-21 23:03:31 補充：
因為你冇講明個number要係real定complex.
i = 開方 -1
e.g. (-5i)(-4i)
= -20
2012-08-21 23:03:31 補充：
因為你冇講明個number要係real定complex.
i = 開方 -1
參考: , 自己
收錄日期: 2021-04-13 18:56:24
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