Пошаговое объяснение:
3) y(x) = - 27x⁷ / sin³x + 1
0 = - 27x⁷ / sin³x + 1
0 = - 27x⁷ / sin(x)³ + 1 ОДЗ: x ≠ 3π/2 + 2 kπ, k∈Z
- 27x⁷ / sin(x)³ + 1 = 0
27x⁷ / sin(x)³ + 1 = 0
27 x⁷ = 0
x⁷ = 0
x = 0
4) y(x) = cos(x) / 5 + x²
0 = cos(x) / 5 + x², x∉R
cos(x) / 5 + x² = 0
cos(x) = 0
x = π/2 + kπ, k∈Za2
Пошаговое объяснение:
3) y(x) = - 27x⁷ / sin³x + 1
0 = - 27x⁷ / sin³x + 1
0 = - 27x⁷ / sin(x)³ + 1 ОДЗ: x ≠ 3π/2 + 2 kπ, k∈Z
- 27x⁷ / sin(x)³ + 1 = 0
27x⁷ / sin(x)³ + 1 = 0
27 x⁷ = 0
x⁷ = 0
x = 0
4) y(x) = cos(x) / 5 + x²
0 = cos(x) / 5 + x², x∉R
cos(x) / 5 + x² = 0
cos(x) = 0
x = π/2 + kπ, k∈Za2