$\sin 2x - 2m\sqrt{2}(\sin x + \cos x) + {\cos^{2} x}  = 0$
a/ Giải pt khi $m = 1 $
b/  Tìm $m$ để pt có nghiệm
sao xóa treo thưởng nhỉ, giải ra rồi :D –  gunbk92 26-02-13 03:48 PM
Bạn nhớ cho các công thức toán vào trong 2 dấu $.Xem Video hướng dẫn để biết thêm.Thanks –  Học Tại Nhà 23-02-13 02:57 PM

bị xóa vì bị trùng bởi Đức Vỹ 24-10-13 05:10 PM

Câu hỏi này có nội dung hoàn toàn trùng với câu hỏi đã có.

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