Угловой коэффициент касательной равен :
k = f'(x₀)
y = f(x₀) + f'(x₀)(x - x₀)
f(x) = x³ - 2x² + 3 x₀ = - 1
f'(x) = (x³)' - 2(x²)' + 3' = 3x² - 4x
f'(- 1) = 3 * (- 1)² - 4 * (- 1) = 3 + 4 = 7
k = f'(- 1) = 7
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Угловой коэффициент касательной равен :
k = f'(x₀)
y = f(x₀) + f'(x₀)(x - x₀)
f(x) = x³ - 2x² + 3 x₀ = - 1
f'(x) = (x³)' - 2(x²)' + 3' = 3x² - 4x
f'(- 1) = 3 * (- 1)² - 4 * (- 1) = 3 + 4 = 7
k = f'(- 1) = 7