Page 11 - CHƯƠNG II: GIẢI TÍCH 12-12a2

Trường THPT Châu Phú Chương II: Mũ – Lôgarit INOXHTT
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Câu 95: Tập nghiệm của phương trình: 5 + x 1 − 5 3 x − = 26 là:



A. 2; 4 B. 3; 5 C. 1; 3 D. 
)
−
3
lg
C©u 96: Ph-¬ng tr×nh: ( 54 x = 3lgx cã nghiÖm lµ:
A. 1 B. 2 C. 3 D. 4
+
+
=
C©u 97: Ph-¬ng tr×nh: log x log x log x 11 cã nghiÖm lµ:
2 4 8
A. 24 B. 36 C. 45 D. 64

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Câu 98: Phương trình: 9 + x 6 = x 2.4 có nghiệm là:
x
A. 3 B. 2 C. 1 D. 0
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x
Câu 99: Phương trình: 2 = − + có nghiệm là:
x 6
A. 1 B. 2 C. 3 D. 4
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Câu 100: Cho phương trình 4 − 3.2 + 2 0. Số nghiệm của phương trình là:
=
x
x
A .0 B .1 C .2 D .3
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Câu 101: Đạo hàm cấp 1 của hàm số y = log (2x + 3 1) là:

2 − 2ln x 2 2
. A . B . C .D =
(2x + 1)ln x (2x + 1) (2x + 1)ln x (x + 1)ln x

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