http://x4b.xanga.com/c3bd827112533136026862/t99728822.bmp
計左呢題好耐
我計左好耐,a,b都應該係surd
但係佢又話得一個係surd
咁我想請教大家,究竟邊個係surd
同埋可以俾解釋俾我聽嗎?
大大唔該哂!!!
which one is a surd? please help!
2007-07-18 5:32 am
回答 (3)
2007-07-18 5:53 am
✔ 最佳答案
As follows:圖片參考：http://i117.photobucket.com/albums/o61/billy_hywung/Jul07/Crazysurd1.jpg
所以答案是 A, 因為只有它最後答案中的開方根號內含有不是 perfect square (平方數) 的數在內.
參考: My Maths knowledge
2007-07-18 6:26 pm
A. √4 / √10
= 2 / √10
B. √242 / √18
= 11√2 / 3√2
= 11 / 3
C. √0.0016
= 0.04
D. √47.61
= 6.9
So the answer is A.
= 2 / √10
B. √242 / √18
= 11√2 / 3√2
= 11 / 3
C. √0.0016
= 0.04
D. √47.61
= 6.9
So the answer is A.
2007-07-18 5:52 am
答案:A
B= √(242/18) =√(121/9) =√((11/3)^2) = 11/3
C= √0.0016=√(0.04^2)=0.04
D= √47.61=√((6.9)^2) = 6.9
.'. A is a surd
B= √(242/18) =√(121/9) =√((11/3)^2) = 11/3
C= √0.0016=√(0.04^2)=0.04
D= √47.61=√((6.9)^2) = 6.9
.'. A is a surd
收錄日期: 2021-04-13 00:50:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070717000051KK04985