Производную функцию надо найти.

А) f(x) = 3 - 12x²
f(5) = 3 - 12*25 = -297
б) f(x) = 7x⁶ - 18x⁵ + 9x²
f(-1) = 7 +18 +9 = 34
в) f(x) = 16x
f(0,5) = 16*0,5 = 8
г) f(x) = x³ -5x²
f(x) = 3x² -10x
f(-4) =3*16 -19*(-4) = 48 + 76 = 124
д)f(x) = √x(x² -1)
f(x) = 1/(2√x) *(x² -1) + √x*2x
f(4) = 1/(2√4) *(16 -1) + √4*8 = 1/4*15 + 16 = 15/4 +16 = 79/4 = 19,75