第九課 變分 DSE 卷二題目
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Wing Sung
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16 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2007-CE-MATH 2 Q14 (71%)
已知 y 的一部為常數,另一部分隨 x 正變。當 x = 2 時,y = 17;
又當 x = 4 時,y = 11。
求當 y = 5 時 x 的值。
–3
6
8
112
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2008-CE-MATH 2 Q14 (53%)
假定 y 隨x 正變且隨 z2 反變。
若 x 及 z 均減少 20%,則 y
減少17%。
減少20%。
增加20%。
增加25%。
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2008-CE-MATH 2 Q15 (68%)
已知 f(x) 的一部分為隨x正變,
而另一部分隨 x2 正變。
若 f(1) = 5及 f(2) = 16;則 f(3) =
21。
27。
33。
57。
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2009-CE-MATH 2 Q14 (62%)
已知 y 的一部分為常數,
另一部分隨 x 反變。
當 x = 1時,y = –1;又當 x = 2時,y = 1。
求當 y = 2時 x 的值。
–4
1
2.5
4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2010-CE-MATH 2 Q16 (55%)
已知 z 隨 x 正變且隨 y2 正變。
若 x 減少 20% 且 y 增加 15%,則 z
增加5.8%。
減少5.8%
增加8%。
減少8%。
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2011-CE-MATH 2 Q13 (65%)
已知 a 隨 b 正變且隨 c2反變。
當 b = 6 及 c = 3 時,a = –2。
當 a = –9 及 c = 4時,b =
5。
36。
48。
576。
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
(樣本試卷) HKDSE-MATH CP 2 Q14
已知 z 隨 x 正變且隨 y 反變。
當 x = 3 及 y = 4 時,z = 18。
當 x = 2 及 z = 8 時,y =
1。
3。
6。
9。
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