y = 3 + 4x - 2x²
y' = 3' + 4(x)' - 2(x²)' = 0 + 4 * 1 - 2 * 2x = 4 - 4x
y' = 4 - 4x
k = y'(x₀) = y'(2)
k = 4 - 4 * 2 = 4 - 8 = - 4
ответ : k = - 4
y = 3 + 4x - 2x²
y' = 3' + 4(x)' - 2(x²)' = 0 + 4 * 1 - 2 * 2x = 4 - 4x
y' = 4 - 4x
k = y'(x₀) = y'(2)
k = 4 - 4 * 2 = 4 - 8 = - 4
ответ : k = - 4