Page 28 - CHƯƠNG II: GIẢI TÍCH 12-12a2

Trường THPT Châu Phú Chương II: Mũ – Lôgarit INOXHTT

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1 2x x− 1
Câu 202: Cho biểu thức A = + 3. 2 − 4 2 . Đặt x = t + 2 1 với A = 9 thì giá trị của t là:
2 − x− 1
9
0
. At = 3 . B t = 2 . C t = − . D t =
2
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  
Câu 203: Cho f(x) = ln sin 2x . Đạo hàm f’   bằng:
 8 
A. 1 B. 2 C. 3 D. 4

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 4 2 4
Câu 204: Rút gọn biểu thức x x : x (x > 0), ta đợc:

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2
Câu 205: Cho a là một số dơng, biểu thức a 3 a viết dới dạng luỹ thừa với số mũ hữu tỷ là:
7 5 6 11
A. a B. a C. a D. a
6
6
6
5
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Câu 206: Biểu thức x. x. x (x > 0) viết dới dạng luỹ thừa với số mũ hữu tỷ là:
5
3
6
7 5 2 5
A. x B. x C. x D. x
3
3
2
3
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