Mathematics
Senior High
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想問這題~
1)設4是階方陣,且aj = 2+ j2,若矩陣4所有元素的和為40m²,則n值為何?
(A)5 (B)6 (C)7 (D)8 (E)9
[x+2y-z=2
次聯立方程式 2x-3y-z=-2,
若三元一次聯立方程組無解,則a、b的值為
à 11-U
a
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