X - 3y = 8 /*(-6)
6x + 5y = 25
-6x + 18y = - 48
6x + 5y = 25
--------------------------- +
23y = - 23
y = - 1
x = 8 + 3y
x = 8 - 3 = 5
ОТВЕТ
( 5; - 1)
А) ( 3-d)^2
Б) (4d+3)^2
В) (6b-5d)^2
Г) ((1/2)^2* d+ b)^2
Вот решение :) надеюсь, правильно!
Найдём пределы интегрирования, приравняв функции:
√х = х/2
2√х = х
4х = х²
х₁ = 0
х₂ = 4.
![S= \int\limits^4_0 ({ \sqrt{x}- \frac{x}{2} }) \, dx = \frac{2x^ \frac{3}{2} }{3} - \frac{x^2}{4} +C| _{0} ^{4} =](https://tex.z-dn.net/?f=S%3D+%5Cint%5Climits%5E4_0+%28%7B+%5Csqrt%7Bx%7D-+%5Cfrac%7Bx%7D%7B2%7D+%7D%29+%5C%2C+dx+%3D+%5Cfrac%7B2x%5E+%5Cfrac%7B3%7D%7B2%7D+%7D%7B3%7D+-+%5Cfrac%7Bx%5E2%7D%7B4%7D+%2BC%7C+_%7B0%7D++%5E%7B4%7D+%3D)
![= \frac{2 \sqrt{4^3} }{3} - \frac{16x}{4} = \frac{16}{3}- \frac{16}{4}= \frac{16}{12}= \frac{4}{3}](https://tex.z-dn.net/?f=%3D+%5Cfrac%7B2+%5Csqrt%7B4%5E3%7D+%7D%7B3%7D+-+%5Cfrac%7B16x%7D%7B4%7D+%3D+%5Cfrac%7B16%7D%7B3%7D-+%5Cfrac%7B16%7D%7B4%7D%3D+%5Cfrac%7B16%7D%7B12%7D%3D+%5Cfrac%7B4%7D%7B3%7D++++)