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二元一次函數圖形 15點

Sep 8th 2014, 13:10

[A]
f(a)就是 y=f(x) 在x=a時y的值
f(b)就是 y=f(x) 在x=b時y的值既然你有圖，可已很清楚得知 f(a)

[B]
同理，g(a) > g(b)

[C]
在 x>3 的地方畫一條線當作 x=a 的線，可以分辨出f(a)

[D]
同理，f(b) > g(b)

答案為A

參考資料：我

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