600 :100*25= 150
<em>Удачи!!!</em>
<span>а-х/ах при а=2,5 и х=-0,2
(2,5-(-0,2))/2,5*(-0,2)=2,5+0,2/</span><span>2,5*(-0,2)=2,7/(-0,5)=-5,4</span>
(x-1)(x+7)
x²+7x-x-7
x²+6x-7
Решение
<span> y=3-cos2x-4sinx
y ` = 2sin2x - 4cosx
y ` = 0
</span><span>2sin2x - 4cosx = 0
</span>4sinx*cosx - 4cosx = 0
4cosx*(sinx - 1) = 0
1) cosx = 0
x₁ = π/2 + πk, k ∈ Z
2) sinx - 1 = 0
sinx = 1
x₂ = π/2 + 2πn, n ∈ Z
4X - 20 - 7X + 9 = 1
- 3X = 1 + 11
- 3X = 12
X = - 4