[tex]\displaystyle\bf\\\Big(\frac{9}{49} \Big)^{Sinx\cdot Cosx} =1\frac{4}{3} \\\\\\\Big(\frac{3}{7} \Big)^{2Sinx\cdot Cosx} =\frac{7}{3} \\\\\\\Big(\frac{3}{7} \Big)^{2Sinx\cdot Cosx} =\Big(\frac{3}{7}\Big)^{-1} \\\\\\2Sinx Cosx=-1\\\\Sin2x=-1\\\\2x=-\frac{\pi }{2} +2\pi n,n\in Z\\\\x=-\frac{\pi }{4}+\pi n,n\in Z \\\\Otvet \ : \ -\frac{\pi }{4} +\pi n,n\in Z[/tex]
Ответ:
решение смотри на фотографии
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[tex]\displaystyle\bf\\\Big(\frac{9}{49} \Big)^{Sinx\cdot Cosx} =1\frac{4}{3} \\\\\\\Big(\frac{3}{7} \Big)^{2Sinx\cdot Cosx} =\frac{7}{3} \\\\\\\Big(\frac{3}{7} \Big)^{2Sinx\cdot Cosx} =\Big(\frac{3}{7}\Big)^{-1} \\\\\\2Sinx Cosx=-1\\\\Sin2x=-1\\\\2x=-\frac{\pi }{2} +2\pi n,n\in Z\\\\x=-\frac{\pi }{4}+\pi n,n\in Z \\\\Otvet \ : \ -\frac{\pi }{4} +\pi n,n\in Z[/tex]
Ответ:
решение смотри на фотографии