Page 10 - CHƯƠNG II: GIẢI TÍCH 12-12a2

Trường THPT Châu Phú Chương II: Mũ – Lôgarit INOXHTT
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Câu 87: Tập xác định của hàm số y = ln(2x + 2 e 2 ) là:

1 e 1
. A D = . R . B D = (− ; ). . C D = ( ;+ ). . D D = (− ;+
)
2e 2 2
e
C©u 88: Hµm sè y = x +  ( x − 2 ) 1 cã tËp x¸c ®Þnh lµ:
A. R B. (1; +) C. (-1; 1) D. R\{-1; 1}

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Câu 89: Đạo hàm cấp 1 của hàm số y = ln(2x + 2 e 2 ) là:
4x 4x + 2e 4x x
. A . B . C D =
2
2
2
2
(2x + e 2 2 (2x + e 2 2 (2x + e 2 ) (2x + e 2 2
)
)
)
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1 2x x− 1 A 2 2A
Câu 90: Cho biểu thức A = − x− + 3. 2 − 4 2 . Tìm x biết + = − 1.
2 1 81 9
. A x = 2 . B x = 1 C .x  2 D .x  1
)
C©u 91: Ph-¬ng tr×nh: (x 1 + ln (x + ) 3 = ln (x + 7 )
+
ln
A. 0 B. 1 C. 2 D. 3

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x 1 −
x 1 −
Câu 92: Phương trình: 2 + 2 + 2 x 2 − = 3 − 3 + 3 x 2 − có nghiệm là:
x
x
A. 2 B. 3 C. 4 D. 5
 2  − x
−
C©u 93: Ph-¬ng tr×nh 0,125.4 2x 3 =     cã nghiÖm lµ:
 8 
A. 3 B. 4 C. 5 D. 6

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+
+
Câu 94: Phương trình: 2 2x 6 2 + x 7 = 17 có nghiệm là:
A. -3 B. 2 C. 3 D. 5

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