Question

1) f(x)=-2x³+8x-3
f'(2)+f'(-1)=?
2) f(x)=x³-5x²+2
f'(2)+f'(1)=?
3) f(x)=2x³-5x
f'(2)+f'(3)=?​

Answer 1

1) у(х)=-2х³+8х-3

  у'(х)=-6х²+8

  у'(2)+y'(-1)=-6(2)²+8-6(-1)²+8=-24+16-6=-14