Page 25 - CHƯƠNG II: GIẢI TÍCH 12-12a2

Trường THPT Châu Phú Chương II: Mũ – Lôgarit INOXHTT
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1 2x x− 1
Câu 185: Cho biểu thức A = + 3. 2 − 4 2 . Biểu thức A được rút gọn thành:
2 − x− 1
x
. 9.2
A − x− 1 B .9.2 x− 1 C .9.2 x+ 1 D .9.2
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
x
Câu 186: Cho f(x) = x . . Đạo hàm f’(1) bằng:
2
A. ( + ln2) B. ( + ln) C. ln D.  ln
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1 2x x− 1
x
x
=
Câu 187: Cho x thỏa mãn (2 − 6)(2 + 6) 0. Khi đó giá trị của A = + 3. 2 − 4 2 là:
2 − x− 1
A .25 B .26 C .27 D .28
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2
cos x
Câu 188: Cho f(x) = e . Đạo hàm f’(0) bằng:
A. 0 B. 1 C. 2 D. 3
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Câu 189: Cho f(x) = lg x. Đạo hàm f’(10) bằng:
2
A. ln10 B. 1 C. 10 D. 2 + ln10
5ln10
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Câu 190: Nếu log x = 1 log 9 log 5 log 2 (a > 0, a khác 1) thì x bằng:
+
−
a a a a
2
2
3
6
A. B. C. D. 3
5 5 5
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