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√2sin(2x-п/4) +1=0. 2cos2x=sin (п/2+x). Cos x=cos 5x [-п/4; п/4]. Sin 2x-п/3 1.
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Cos x равно a
A y cos x 2x
Cos x a где a 1
A sinx a cos x
2sin x a cos x a
A cos x 0 7
A sin 2x cos x 0
Cosx cos x a
Cos x a 12
R a 1 cos x
![2 sinx cos x a. √2sin(2x-п/4) +1=0. 2cos2x=sin (п/2+x). Cos x=cos 5x [-п/4; п/4]. Sin 2x-п/3 1.](https://shareslide.ru/img/thumbs/7a8d1cfd2e7341c886a6a656216a1adf-800x.jpg)
√2sin(2x-п/4) +1=0. 2cos2x=sin (п/2+x). Cos x=cos 5x [-п/4; п/4]. Sin 2x-п/3 1. ![2 sinx cos x a. √2sin(2x-п/4) +1=0. 2cos2x=sin (п/2+x). Cos x=cos 5x [-п/4; п/4]. Sin 2x-п/3 1.](https://avatars.mds.yandex.net/i?id=c6dbfd994c64ab188e67def03b322926_l-5257754-images-thumbs&n=13)