Question

помогите до завтра нужно

Answer 1

1) f'(x) = 9x² -2
f'(1) = 9*1 -2 = 7
2)f'(x) = 3x²(x² + 2) + (x³ -3)*2x = 3x⁵ +6x² -2x⁴ - 6x
f'(-1) = 3*(-1) +6*1 - 2*1 -6*(-1) = 7
3)f(x) =(2 - 6x)/(3х -1) = -2(3х -1)/(3х -1) = -2
f'(x) = 0