※ 引述《FERRE (請聆聽來自火星的問候)》之銘言：
: 對不起，這問題很笨，可是我弄不出來
: 大概是這樣 假設半徑為 15
: x^2+y^2=225 就是圓方程式了..
: 假設我要求 x=-15:0.1:15 所對應出來的每一個y
: 該怎麼寫??
: 不好意思 請指導
y=sqrt(225-x^2)
下半圈自己加上負號就好
--
Deserves death! I daresay he does. Many that live deserve death. And some die
that deserve life. Can you give that to them? Then be not too eager to deal out
death in the name of justice, fearing for your own safty. Even the wise cannot
see all ends.
Gandalf to Frodo
--
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