
高三數學知識點概念複習2
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Medium
sio iris
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23 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若 a > b 且 c < 0,則下列何者正確?
ac > bc
a + c < b + c
ac < bc
a/c > b/c
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
方程式 x² - 4x + k = 0 有相等實根,則 k 的值為?
2
4
-4
0
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
函數 f(x) = √(3x - 6) 的定義域 (domain) 是?
x ≥ 2
x > 2
x ≤ 2
x < 2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若 log₂ 3 = a,則 log₂ 18 = ?
a + 1
2a + 1
a + 2
3a
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在坐標平面上,點 (2, 3) 關於直線 y = x 的對稱點是?
(3, 2)
(-2, -3)
(-3, -2)
(2, -3)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知等比數列的首項為 3,公比為 2,則第 5 項為?
24
30
36
48
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若 sin θ = 3/5 且 θ 為第二象限角,則 cos θ = ?
4/5
-4/5
3/4
-3/4
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