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Mathematics, 15.06.2021 06:20 vickygloom

Trong mặt phẳngOxy , phép quay mỗi vector quanh gốc tọa độ một góc α ngược
chiều kim đồng hồ là một ánh xạ tuyến tính
(Hình 1). Hãy tìm ma trận biểu diễn và biểu
thức của phép quay trên.
Áp dụng: Cho tam giác MNP gồm các
đỉnh (1,1) M , (1,2) N , (3,3) P hãy tìm ảnh của
tam giác MNP qua phép quay nói trên, biết
góc quay là / 4 α = π và vẽ hình biểu diễn.
b. Trình bày một ứng dụng của môn học này.

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Trong mặt phẳngOxy , phép quay mỗi vector quanh gốc tọa độ một góc α ngược
chiều kim đồng hồ...
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