tex]...

June 2022 1 25 Report

СРОЧНО НУЖНО РЕШЕНИЕ!!! ДАЮ 23 БАЛА
5) Область определения [tex]y = \frac{ \sqrt{3x - x^{2} }}{2 - x} [/tex]
7) Решите систему уравнений [tex] \left \{ {{3xy + x = 10} \atop {3xy + y = 12}} \right. [/tex]

Answers & Comments

hote

Verified answer

1) Область определения
$\displaystyle y= \frac{ \sqrt{3x-x^2}}{2-x}\\\\ \left \{ {{2-x \neq 0} \atop {3x-x^2 \geq 0}} \right. \\\\ \left \{ {{x \neq 2} \atop {x(3-x) \geq 0}} \right.\\\\ \left \{ {{x \neq 2} \atop {x\in [0;3]}} \right.\\\\ODZ: [0;2) (2;3]$

2) Решить систему
$\displaystyle \left \{ {{3xy+x=10} \atop {3xy+y=12}} \right.$

вычтем из второго уравнения первое
$\displaystyle y-x=2\\\\y=2+x$

подставим в первое

$\displaystyle 3x(2+x)+x=10\\\\6x+3x^2+x-10=0\\\\3x^2+7x-10=0\\\\D=49+120=169=13^2\\\\x_{1.2}= \frac{-7 \pm 13}{6}\\\\x_1=1; x_2=-10/3\\\\y_1=3; y_2=-4/3$

Ответ (1;3) и (-10/3; -4/3)

Answers & Comments

Verified answer

s kakoj put prohodit telo za promezhutok vremeni ot nulya do 3 s najdite srednyu

kut mizh golovnimi ploshinami polyarizatora i analizatora f 45 u skilki raziv

cv zminu vnutrishnoyi energiyi du gazu i robotu a vikonanu gazom

srochno zadacha 20 balov iz dvoh mist vidstan mizh yakimi 90 km virushili odnoch

Complete the sentences with verb from the box...

pomogite pozhalujsta sdelat uprazhnenie 443b1fcf9b9030b4b30c55c77a0a119e4 98364

рекомендуемые вопросы

Helpful Links

Helpful Social