Объяснение:
4 sin²x + 4 sinx+1=0
t = sin x
4t² + 4t + 1 = 0
D = 4^2 - 4 * 4 * 1 = 16 - 16 = 0
t = -4 / (2*4) = -1/2
sin x = -1/2
x = (-1)^(n+1) * (π/6) + πn , n ∈ Z
Объяснение:
4 sin²x + 4 sinx+1=0
t = sin x
4t² + 4t + 1 = 0
D = 4^2 - 4 * 4 * 1 = 16 - 16 = 0
t = -4 / (2*4) = -1/2
sin x = -1/2
x = (-1)^(n+1) * (π/6) + πn , n ∈ Z