Page 13 - CHƯƠNG II: GIẢI TÍCH 12-12a2

Trường THPT Châu Phú Chương II: Mũ – Lôgarit INOXHTT
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2x 3 + 4 x −
Câu 109: Phương trình 4 = 8 có nghiệm là:
4
2
6
A. B. C. D. 2
7 3 5
C©u 110: Ph-¬ng tr×nh: 9 + x 6 = x 2.4 cã nghiÖm lµ:
x
A. 3 B. 2 C. 1 D. 0
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Câu 111: Điểm nào sau đây thuộc đồ thị hàm số y = log (2x + 3 1)là:
A
.(1;1) B − .( 1;0) C .(1;0) D − .( 1;1)
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2log (2x + 1) 5
Câu 112: Giá trị của .(2x + y / 1)ln x + 9 là: biết y = log (2x + 1)
y 3

A .5 B .6 C .7 .D = 8
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(
−
Câu 113: Với giá trị nào của x thì biểu thức log 2x x 2 ) có nghĩa?
6
A. 0 < x < 2 B. x > 2 C. -1 < x < 1 D. x < 3
1
+
log 2 3 3log 5
8
C©ub114: 4 2 b»ng:
A. 25 B. 45 C. 50 D. 75

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4
Câu 115: Xác định m để y − ) 3m − , biết y = ln(2x + 2 e 2 )
( e =
/
9e 3
. Am = 3 . B m = 2 C .m = 1 D .m =
0
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