#11. f'(x)=(x^9)' = 9x^82. f'(x) = 4*(x^5)' = 4*5x^4 = 20x^43. f'(x) = 3*(x^4)' + 13*(x^2)' - 4*(x)' + (26)' = 3*4x^3 + 13*2x - 4 = 12x^3 + 26x - 44. f'(x) = (x^2 + 6)*(2x^5 - 1) = (x^2 + 6)' (2x^5 - 1) + (2x^5 - 1)'*(x^2 + 6) = = 2x (2x^5 - 1) + 10x^4 *(x^2 + 6) = 14x^6 - 2x + 60x^45. f'(x) = (x/(x^3+7)) ' = (x'*(x^3 + 7) - (x^3 - 7)'*x)/(x^3 + 7)^2 = = (7 - 2x^3)/(x^3 + 7)^2#2f'(x) = (x^4 + 5*x^2 - 3)' = 4x^3 + 10x f ' (1) = 4*1^3 + 10*1 = 4 + 10 = 14#3Уравнение касательной к графику функцииy = f(x0) + f'(x0) (x - x0) y = x^2 + x + 2, x0 = 1 f(1) = 1^2 + 1 + 2 = 4f'(x) = 2x + 1f'(1) = 2*1 + 1 = 3y = 4 + 3(x - 1) = 3x - 3 + 4 = 3x + 1