
翰林國中數學3下CH1-2-二次函數圖形與最大值、最小值
Authored by 翰林數學 翰林數學
Mathematics
9th Grade
二次函數的最大值或最小值 covered
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
已知二次函數 y=ax2+k,其中 a<0、k>0,則下列哪一個選項可能是此二次函數的圖形?〔91. 基測Ⅰ〕
Tags
y=ax²+k的圖形
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
坐標平面上有 y=2x2 及 y=2(x-3)2 兩個二次函數的圖形,則下列敘述何者正確?
開口大小一樣
對稱軸一樣
頂點一樣
開口方向不一樣
Tags
y=a(x-h)² 的圖形
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在坐標平面上,y=2x2-8 的圖形經由下列哪一種方式移動後,可得到 y=2(x-5)2+12 的圖形?〔92. 基測Ⅱ〕
先向左移 5 單位,再向上移 20 單位
先向右移 5 單位,再向上移 20 單位
先向下移 5 單位,再向右移 20 單位
先向上移 5 單位,再向左移 20 單位
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列各二次函數的頂點,何者最接近原點?
y=2x2+3
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
下列為四個二次函數的圖形,哪一個函數在 x=2 時有最大值 3?〔92. 基測Ⅰ〕
Tags
二次函數的最大值或最小值
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
附圖為翰翰投籃的情形,請問圖中籃球所經過的路線最有可能為下列哪一個函數的圖形?
y=x2+3
y=-x2+3
y=x+3
y=-x+3
Tags
y=ax²+k的圖形
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
小明賣玩具,若玩具一個賣 x 元,則利潤為 y 元,x、y 的關係式為 y=2(x-5)2+100,則下列敘述何者正確?
玩具一個賣 5 元,可得最大利潤為 100 元
玩具一個賣 5 元,可得最小利潤為 100 元
玩具一個賣 10 元,可得最大利潤為 150 元
玩具一個賣 10 元,可得最小利潤為 150 元
Tags
二次函數的最大值或最小值
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