y = f’(x₀) * (x − x₀) + f(x₀) - уравнение касательной
а) f(a) = 4*2² = 16
f'(x) = 8x
f'(a) = 8*2 = 16
y = 16(x-2)+16 = 16x - 32 + 16 = 16x - 16
b) f(a) = 3 - 2 = 1
f'(x) = 6х -2
f'(a) = 6 - 2 = 4
y = 4(x-1)+1 = 4x - 4 + 1 = 4x - 3
c) f(a) = 8/3 - 4 = -4/3 = -1 1/3
f'(x) = x²-2
f'(a) = 4 - 2 = 2
y = 2(x-2) - 1 1/3 = 2x - 4 - 1 1/3 = 2x - 5 1/3
y = f’(x₀) * (x − x₀) + f(x₀) - уравнение касательной
а) f(a) = 4*2² = 16
f'(x) = 8x
f'(a) = 8*2 = 16
y = 16(x-2)+16 = 16x - 32 + 16 = 16x - 16
b) f(a) = 3 - 2 = 1
f'(x) = 6х -2
f'(a) = 6 - 2 = 4
y = 4(x-1)+1 = 4x - 4 + 1 = 4x - 3
c) f(a) = 8/3 - 4 = -4/3 = -1 1/3
f'(x) = x²-2
f'(a) = 4 - 2 = 2
y = 2(x-2) - 1 1/3 = 2x - 4 - 1 1/3 = 2x - 5 1/3