<em />х + у = 4 * (- 2) -2х -2у = -8 у = - 5
2х - 3у = 13 2х - 3у = 13 2х - 3 * (-5) = 13
-2х - 2у + 2х - 3у = -8 + 13 2х + 15 = 13
-2у - 3у = 5 2х = 13 - 15
- 1у = 5 2х = - 2
у = 5 : ( - 1) х = -1
у = -5
Ответ: ( -1; -5)
Надеюсь правильно)))
(2.2*10^-2)(7*10^-3)=(2.2*7)*10^(-5)=0.000154
A=v`(t)=-12sin(3t-π/6)
x(t)=F(v)=4/3*sin(3t-π/6)+C
4/3*sin(π-π/6)+C=5/3
4/3*1/2+C=5/3
C=5/3-2/3=1
x(π/3)=4/3*sin(3t-π/6)+1
v(π/3)=4cos5π/6 =-4*√3/2=-2√3
a(π/3)=-12sin5π/6=-12*1/2=-6