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    Chào mừng quý vị đến với Thư viện Bài giảng điện tử.

    Quý vị chưa đăng nhập hoặc chưa đăng ký làm thành viên, vì vậy chưa thể tải được các tư liệu của Thư viện về máy tính của mình.
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    Chương III. §6. Đường hypebol

    Tham khảo cùng nội dung: Bài giảng, Giáo án, E-learning, Bài mẫu, Sách giáo khoa, ...
    Nhấn vào đây để tải về
    Báo tài liệu có sai sót
    Nhắn tin cho tác giả
    (Tài liệu chưa được thẩm định)
    Nguồn:
    Người gửi: Trần Văn Phong (trang riêng)
    Ngày gửi: 18h:19' 29-01-2008
    Dung lượng: 834.5 KB
    Số lượt tải: 500
    Số lượt thích: 0 người
    KIỂM TRA BÀI CỦ
    Đề : Nêu định nghĩa elip,các yếu tố tiêu điểm,tiêu cự,tâm sai?Phương trình chính tắc của elip?Công thức bán kính qua tiêu của điểm M?
    Giải :
    Định nghĩa Elip
    BÀI 6 : ĐƯỜNG HYPEBOL


    1.ĐỊNH NGHĨA ĐƯỜNG HYPEBOL
    BÀI MỚI
    Vậy đường hypebol là gì?
    HOẠT ĐỘNG 1
    BÀI 6:ĐƯỜNG HYPEBOL
    1.ĐỊNH NGHĨA ĐƯỜNG HYPEBOL
    Trong cuộc sống hằng ngày,chúng ta bắt gặp nhiều hình ảnh đường Hypebol,rất quen thuộc,ví dụ như:
    BÀI 6: ĐƯỜNG HYPEBOL
    BÀI 6:ĐƯỜNG HYPEBOL
    VẼ ĐƯỜNG HYPEBOL.
    BÀI 6: ĐƯỜNG HYPEBOL
    2. PHƯƠNG TRÌNH CHÍNH TẮC CỦA HYPEBOL.
    HOẠT ĐỘNG 2
    BÀI 6: ĐƯỜNG HYPEBOL

    BÀI 6: ĐƯỜNG HYPEBOL

    BÀI 6: ĐƯỜNG HYPEBOL
    2. PHƯƠNG TRÌNH CHÍNH TẮC CỦA HYPEBOL.

    BÀI 6: ĐƯỜNG HYPEBOL
    3.HÌNH DẠNG CỦA HYPEBOL
    BÀI 6: ĐƯỜNG HYPEBOL.
    VÍ DỤ
    Độ dài trục thực :
    Độ dài trục ảo :
    Cặp tiêu điểm của hypebol là :
    Tâm sai của hypebol là :
    SAI
    ĐÚNG
    SAI
    SAI
    ĐÚNG
    SAI
    SAI
    SAI
    BÀI 6: ĐƯỜNG HYPEBOL
    Hypebol (H) gồm hai nhánh nằm hai bên trục ảo.
    3.HÌNH DẠNG CỦA HYPEBOL
    Hai đường thẳng chứa hai đường chéo của hình chữ nhật cơ sở gọi là hai đường tiệm cận của (H).
    Phương trình của hai đường tiệm cận đó là:
    BÀI 6: ĐƯỜNG HYPEBOL
    HOẠT ĐỘNG 3
    BÀI 6: ĐƯỜNG HYPEBOL

    BÀI 6: ĐƯỜNG HYPEBOL
    Như vậy , khi điểm M trên hypebol càng xa góc tọa độ thì khoảng cách từ điểm đó đến một trong hai đường tiệm cận càng nhỏ đi,điều đó cũng có nghĩa là điểm M ngày càng sát đường tiệm cận đó ( chú ý là đường hypebol không cắt đường tiệm cận ).
    Điều này giải thích ý nghĩa của từ “ tiệm cận “.
    MINH HỌA
    BÀI 6: ĐƯỜNG HYPEBOL
    HOẠT ĐỘNG 4
    TỔNG KẾT BÀI .
    Định nghĩa :
    Phương trình chính tắc.
    Tiêu điểm :
    Đỉnh :
    Tâm sai :
    Tiêu cự :
    Hai đường tiệm cận :
    Bán kính qua tiêu:
    BÀI 6: ĐƯỜNG HYPEBOL
    KIỂM TRA-ĐÁNH GIÁ
    No_avatar
    bai hay qua cam on nhaMỉm cười
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