F(x)=2sinx*cosx=sin(2x)
xo=0
x₁=π/12
Δf(x)=f(xo+Δx)-f(xo)
Δx=x₁-x₀=π/12-0=π/12
xo+Δx=π/12+0=π/12
Δf(x)=sin(2*π/12) -sin 0 = sin(π/6) - sin 0 = 1/2 - 0 = 1/2
Ответ: 1/2
Y - x = - 3
2x + y = 9
y = x - 3
2x + x - 3 = 9
y = x - 3
3x = 6 ==> x = 2
x = 2
y = 2 - 3 = - 1
1)(х+4)(х+2)
2)(a-2b)( a-5b)