回答:
#G'(X)= 4×^ 3-6x ^ 2 + 2X-2#
说明:
#G(X)=(X ^ 2 + 1)(X ^ 2-2x)#
产品规则:#d / DX(UV)=(DU)/ DXV + U(DV)/ DX#
#U =(X ^ 2 + 1)#
#DU / DX = 2×#
#V = X ^ 2-2x#
#的dv / DX = 2×= 2#
#d / DX(X ^ 2 + 1)(X ^ 2-2x)=(DU)/ DXV + U(DU)/ DX#
=#2×(X ^ 2-2x)+(X ^ 2 + 1)(2X-2)#
=#2×^ 3-4倍^ 2 + 2×^ 3-2x ^ 2 + 2X-2#
=#4倍^ 3-6x ^ 2 + 2X-2#