Ответы на вопрос:
Y+ 4/x = -2 |*x x - 4/y = 3 |*y xy + 4 = -2x xy - 4 = 3y xy + 2x = -4 xy - 3y = 4 |*(-1) xy + 2x = -4 + -xy + 3y = -4 2x + 3y = -8 x = (-8 - 3y) / 2 x = (-8 - 3y) / 2 (-8 - 3y) / 2 * y - 3y = 4 x = (-8 - 3y) / 2 (-8 - 3y)*y / 2 - 3y = 4 x = (-8 - 3y) / 2 (-8y - 3y^2) / 2 - 3y = 4 |*2 x = (-8 - 3y) / 2 -8y - 3y^2 - 6y = 8 x = (-8 - 3y) / 2 -3y^2 - 14y = 8 -3y^2 - 14y = 8 -3y^2 - 14y - 8 = 0 d = (-14)^2 - 4*(-3)*(-8) = 196 - 96 = 100 = 10^2 y1 = (14-10) / (-6) = -2/3 y2 = (14+10) / (-6) = -4 отсюда, х1 = -8 - 3 * (-2/3) / 2 = (-8 + 2) / 2 = -3 х2 = -8 - 3 * (-4) / 2 = (-8 + 12) / 2 = 2. ответ: (-3 ; -2/3) (2 ; -4)
Популярно: Алгебра
-
ОМОН0707.03.2023 13:50
-
Даня1919128.03.2020 23:27
-
Gllodory28.02.2021 08:50
-
korolevalena2023.12.2021 14:28
-
Danika0201.07.2022 22:28
-
NotSmartBoy30.09.2020 14:22
-
hjhytu28.10.2020 07:53
-
tonplaton05.01.2022 12:52
-
vsviridov08p06zai12.01.2023 14:25
-
Дашулька164407.06.2023 17:15