Ответ:
s=vt
t=s:v
v=s:t
Объяснение:
да, зависимость прямо пропорциональна
{2y-х=3
{х²-3х·y²=1
{x=2y-3
{(2y-3)²-3·(2y-3)·y²=1
(2y-3)²-3·(2y-3)·y²=1
4y² - 12y +9 - 6y³+ 9y² - 1 = 0
- 6y³+ 13y²-12y+8=0
y = -x^(3/2)/sqrt(2)
Open code
y = x^(3/2)/sqrt(2)
Polynomial discriminant:
Δ_x = -108 y^4
Integer roots:
x = 2, y = ± 2
x = 8, y = ± 16
x = 18, y = ± 54
x = 0, y = 0
Properties as a function:Domain:
R^2
Range:
R (all real numbers)
Partial derivatives:Step-by-step solution
d/(dx)(2 y^2 - x^3) = -3 x^2
d/(dy)(2 y^2 - x^3) = 4 y
Indefinite integral:Step-by-step solution
integral(-x^3 + 2 y^2) dx = 2 x y^2 - x^4/4 + constant
Definite integral over a disk of radius R:
integral integral_(x^2 + y^2<R^2)(2 y^2 - x^3) dx dy = (π R^4)/2
Definite integral over a square of edge length 2 L:
integral_(-L)^L integral_(-L)^L (-x^3 + 2 y^2) dy dx = (8 L^4)/3
понял?
А) 2y·(3y-4y²+3) = - 8у³ + 6у² + 6у
Б) -4a²· (2a²-5+4a) = - 8a⁴ - 16a³ +20a²
B) 13·(2y+1) - 4·(5y-6) = 26y+13-20y+24 = 6y+37
2x+3(x-1)=3x+8
2x+3x-3=3x+8
2x+3x-3x=8+3
2x = 11
x = 11 : 2
x = 5,5
Проверка:
2·5,5 + 3·(5,5-1)=3·5,5+8
11+3·4,5 = 16,5+8
11+13,5=24,5
24,5=24,5 верное равенство
Ответ: х=5,5