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Nika2014Kotova
@Nika2014Kotova
April 2022
0
15
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Решите только 1 под б и 2ое
1. a)cos^2 ( 3x+ pi/4) - sin^2(3x+pi/4)+ корень из 3/2=0
б) х принадлежит [ 3pi/4; pi]
2. (cos x - sin x) ^2 = 1- 2 sin 2 x
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Nika2014Kotova
July 2022 | 0 Ответы
Решите подробнее 1) cos^{2} ( \pi -x)+sin 2 x =0 2)2x^{2} cos x +9 - 18 cos x-x...
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Nika2014Kotova
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