Cho đồ thị các hàm số \(y = {a^x},y = {b^x},y = {\log _c}x\) như hình vẽ:
Khẳng định nào dưới đây là đúng?
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
Ta thấy hàm số \(y = {\log _c}x\) nghịch biến nên \(c < 1\).
Hàm số \(y = {a^x},y = {b^x}\) đồng biến nên \(a > 1,b > 1\).
Xét tại \(x = 1\) thì đồ thị hàm số \(y = {a^x}\) có tung độ lớn hơn tung độ của đồ thị hàm số \(y = {b^x}\) nên \(a > b\). Do đó, \(a > b > 1 > c\).
Đáp án B.
Bộ Đề Kiểm Tra Giữa Học Kì II - Toán 11 - (Năm học 2023 - 2024) - Các Trường THPT Trên Toàn Quốc là tài liệu học tập giúp học sinh ôn tập và củng cố kiến thức đã học thông qua các câu hỏi trắc nghiệm đa dạng. Tài liệu không chỉ giúp học sinh rèn luyện kỹ năng tư duy, phân tích mà còn hỗ trợ việc ghi nhớ thông tin quan trọng một cách hiệu quả.
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The (9)_________ of solar panels takes only two days. (10)_________ saving money, you will help protect our environment.
The (11)_________ of our smart systems is proven by thousands of happy customers. A (12)_________ of our customers save up to 40% on energy costs!
SPECIAL OFFER THIS MONTH:
Free consultation and home assessment!
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Phone: 555-123-4567
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Make your home smart today for a better tomorrow!
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Tổ chức nào dưới đây thuộc hệ thống chính trị nước ta?
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