T
tsukushi493
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Mọi người giúp tớ bài này với. Thanks mọi người nhìu nhìu!
[tex]\huge cos^4x + sin^4x + sin(3x -\frac{\pi}{4})cos (x - \frac{\pi}{4} ) -\frac 32 =0[/tex]
Tham khảo:http://diendan.hocmai.vn/showthread.php?t=4917
[tex]\huge cos^4x + sin^4x + sin(3x -\frac{\pi}{4})cos (x - \frac{\pi}{4} ) -\frac 32 =0[/tex]
Tham khảo:http://diendan.hocmai.vn/showthread.php?t=4917
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