Tìm GTLN của $A= -9x^{2}+6x+5\sin (x-\frac{\pi }{4})$
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Edited by Toc Ngan, 24-10-2013 - 16:01.
$A= -9x^{2}+6x+5\sin (x-\frac{\pi }{4})$
Started By phatsp, 24-10-2013 - 11:20
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