NẾU LOG 2 X = 5 LOG 2 A + 4 LOG 2 B, ( A 0, B 0) THÌ...

Question

Câu 1. Nếu log 2 x = 5 log 2 a + 4 log 2 b, ( a > 0, b > 0) thì giá trị của x bằngA. a 4 b 5 . B. 4a + 5b. C. a 5 b 4 . D. 5a + 4b.

Accepted Answer

... ĐÁP ÁN ĐỀ KSCL LỚP 12 THPT NĂM 2019 MÔN: TOÁN Thời gian làm bài : 90 Phút Phần đáp án câu trắc nghiệm: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 1 C D C B B B C C D C B C C A C C C D C C C A D B 2 A D A B D D A B C D C D A A A C D C C C D D B A 3 D B B C C C C A D C A C C C D D A D A B D A A D 4 A C D A D D C B A B B B B A B A A C B A A D B A 5 A A C D C B A D B D D D B B A D A C B C D B B D 6 B B B D A B A A B D D B B D C A D D D C B D A C 7 D C A C B A D B C D A D D D A C B D A A D B B A 8 D C A A A D B B C D C C C C D B C C A A D D A D 9 B A B A D B A C A A A D C B A A A B A C A D A C 10 D B D A B D A B C C B D C A A D B A C D D B A B 11 A A A B C D B D A D B A B B D A B A D A A B D D 12 B A D A A B D B C C B B B B B B B D C C D B D C 13 A C B B A B B C D D B D C A B A A B B B A D C C 14 D B D D C C C A D A B A C C C B D B B B D B B C 15 B C B A D A C A D D A D D A D A C D A A A B C A 16 A D A C D D C B D D D B A C D C C C C C D D B C 17 A D A A B A B C D C B A A D B A D D D C A C A C 18 D B B C D D D A B B D B A A A D C C C D C B B A 19 C A D B D D B A B C A A A A C C C B A B B D D B 20 D B B A D C C A C A C C A D B B B A B B C D C D 21 A B D C B C B B B C C B B B D D B D B C C A D C 22 C A D B A C C A C A A C A C D D A C D D D B B D 23 D D D C B D C A B D D A C C D A D A C D A D D B 25 C B A A D C C A A A B C D C C C D A B A B C A C 26 C A B B C A B A A D B C B A B C C B D C B D B A 27 D C D B D C C D A D C D A D A B D D C A B A D C 28 B C B B B A A D D A C D C A D B A B D C C B B D 29 D B A D A B A A A C B B B A D B C D B B D B C A 30 D D A C B D D B C B D D C D D C D A D A D A B B 31 B D A B C B C A C B A A D B D D C C A D D D B B 32 A B B A C C A B A B D C D D D A B B D C A C B B 33 A C C A C A D B C B D B B A B B A A C A C C C D 34 B A C B A B B B B B B A A B A C D C B D A B D A 35 B D B C D A C B A D C A D D B C B C B D C A A B 36 A A A D B D C D C A D D D B B C B B B B A B A C 37 A B D B D C D C A D D A C A B A B A C D C D B A 38 A B B B A B C D B B D D A A C B D B D A A A C C 39 A B B C D A D D A C B C C D D D D D B D D C B B 40 B B C A C D C A C A A D D A A B C D D C D A B B 41 C D C C C A D C C D B C A C B A D D B D A D A B 42 B C A B B B B A C A C C C A D A A C B C C C B B 43 C A B B D D B B B A D A A D C B C C C D C B D B 44 D A A A C C A B C D C C C D D A D B C B A A D B 45 D A B A B C C A B C A A D C A C A A C A C B B B 46 B B C D B B C C B B D D A C B B C A C C B D A C 47 C C A D C C C B B D D C C A B C B D B D B B D D 48 A C C A A C D C B C B A D C A A B B C A B D C A 49 B A C C A B C D B C C A C B B A B B C C A C D B 50 A B C D B C D A C D B B B B B B A C D A B B C B

NẾU LOG 2 X = 5 LOG 2 A + 4 LOG 2 B, ( A > 0, B > 0) THÌ...

Câu 1. Nếu log ₂ x = 5 log ₂ a + 4 log ₂ b, ( a > 0, b > 0) thì giá trị của x bằng

A. a ⁴ b ⁵ . B. 4a + 5b. C. a ⁵ b ⁴ . D. 5a + 4b.

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