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thuytrang0312
2 năm trước
Bạn nào có thể giải thích giúp mình tại sao sin2x thuộc khoảng [-π/6;π/3] mà suy ra được sinx lại thuộc [-π/3;2π/3] được không ạ.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

BÀI 1: Gạch chân lỗi sai trong câu và viết lại câu đúng. 1. Does the car is cleaned in the garage by your father? __________________________________________________________________ 2. No one were told abut his tragic death. ________________________________________________________________ 3. My computer was purchase from the local shop. _________________________________________________________________ 4. The table was lay by my mother. __________________________________________________________________ 5. The church is constructed in the 18th century. ________________________________________________________________ 6. Did this book read by Jim yesterday? __________________________________________________________________ 7. When my father was worked in the local factory , he didn’t have free time. __________________________________________________________________ 8. The tower was built in 1990 by a famous architect. _________________________________________________________________ 9. This crimnial case was solved with the police. __________________________________________________________________ 10. Were you walked to school when you were a child? __________________________________________________________________

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