A) f'(x) = ½x - 1
f'(2) = 1 - 1 = 0
б) f'(x) = -2/x²
f'(-1) = -2/1 = -2
a) f'(x) = x + 2
f'(-1) = -1 + 2 = 1
б) f'(x) = 4/х²
f'(2) = 4/4 = 1
24ab +2(3b-2a)^2 = 24ab +2(9b^2 - 12ab + 4a^2) = 24ab + 18b^2 - 24ab + 8a^2 = 18b^2 + 8a^2
18*6 + 8*3= 108 + 24 = 132