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Ameya
@Ameya
July 2022
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РЕШИТЕ УМОЛЯЮ ЗАВТРА НУЖНО СДАТЬ!!!!!
а)Cos^2(2x)+sin^2(x)=1
б) sin^(2x)+2sin^2(4x)=5/2
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Answers & Comments
kamilaf2005
(1+cos^2(2x)-sin^2(2x))sin(2x)=cos^2(2x)
2cos^2(2x)sin(2x)=cos^2(2x)
Совокупность
1. cos(2x)=0
2. 2sin(2x)=1
1.
2x=Pi/2+Pi*n ; x=Pi/4+(Pi/2)*n; n - целое
2. sin(2x)=1/2; 2x=+- Pi/6+2Pi*n; x=+-Pi/12+Pi*n;
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Answers & Comments
2cos^2(2x)sin(2x)=cos^2(2x)
Совокупность
1. cos(2x)=0
2. 2sin(2x)=1
1.
2x=Pi/2+Pi*n ; x=Pi/4+(Pi/2)*n; n - целое
2. sin(2x)=1/2; 2x=+- Pi/6+2Pi*n; x=+-Pi/12+Pi*n;