2-x)...

fil24218 @fil24218

August 2022 1 5 Report

1) Решите уравнение (9-3^0, 5x-7)log2(5-2x)=0
2) Упростите уравнение -cos( π+3x)sin x + sin 3x sin (3π/2-x)

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Verified answer

$(9-3^{0,5x-7)}*log_{2}(5-2x)=0$

ОДЗ : 5 - 2x > 0

- 2x > - 5

x < 2,5

$1)9-3^{0,5x-7}=0\\\\9=3^{0,5x-7}\\\\3^{0,5x-7}=3^{2}\\\\0,5x-7=2\\\\0,5x=9\\\\x=18\\\\2)log_{2}(5-2x)=0\\\\5-2x=1\\\\2x=4\\\\x=2$

Ответ : 2 ; 18

$-Cos(\pi +3x)Sinx+Sin3xSin(\frac{3\pi }{2}-x)= Cos3xSinx-Sin3xCosx=Sin(x-3x)=Sin(-2x)=- Sin2x$

1 votes Thanks 1

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Answers & Comments

Verified answer

texnajti summu raznost i delenie1 z112i 2 z24 3i

427cc32a2300f005afd7bbaf0217742961 95585

x 15x30a5aafad97d3ecbc1e1868ac1a4ee95e0 99788

skolko grammov karbonata kaliya poluchitsya pri vzaimodejstvii 168 grammov gidroks980a927f7eef5b1763bcb30535a2ff0f 39712

x dajte pozhalujsta polnyj otvet

integraly 1 neposredstvennoe integrirovanie 2 i 3 zamena peremennoj 4 inte

dana arefm progr an raznost ravna 4 a1120 najdite summu pervyh 20 ti eyo ch

skolko grammov karbonata kaliya poluchitsya pri vzaimodejstvii 168 grammov gidroks

y3x4 4x3issledovat funkciyu postroit grafik

reshite srochno4x 2xlt12

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