¹X
[3]
(a,b,c)=
(A)
[(a+b)x+8y=c+a
[x+(b+c)y=3
【4】 下列何者正確?
a bb al
3ad-20d-3bct ²bd² = 3ad-3bc
c d d c
a+kc
C
(C)\
Tatb 8
btc
(B)
la+kc b+kd
d
b+kde+ka
d t
+
a
有無限多組解,且a+b+c=6,求
abtactb²fbc-8
C
(D)若a,b均為正數,則
| =)
f+kb
b
=
=
a
C-
log₂ a³ log, bo
b(a+b+c) +ac=8
6b-tac-8
b+ka a
d+kc c
【建中】
Ans: (2,0,4)或(-2,3,5)
b
e d-f
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