Deluxe 發表於 21-6-2009 20:01:18

bearwing 發表於 21-6-2009 22:40:40

x^4 + y^2 = -1
y^4 + x^2 = -1
咁樣咪solution not exist

一定要given 左solution exist 先可以將
h(x)=h(y) 變成個solution of the system
即係將h(x)=h(y) rewrite 成
f(x)+g(y)=c
f(y)+g(x)=c
時, 要用solution exist

Deluxe 發表於 22-6-2009 00:13:20

bearwing 發表於 22-6-2009 18:54:45

noone try b) []

Crossbone-X1 發表於 24-6-2009 00:02:35

聽日考pure
而家都仲未做到呢題 我投降= =
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