回答:
#g '(x)= 4x ^ 3-6x ^ 2 + 2x-2#
説明:
#g(x)=(x ^ 2 + 1)(x ^ 2-2x)#
商品ルール:#d / dx(uv)=(デュ)/ dxv + u(dv)/ dx#
#u =(x ^ 2 + 1)#
#du / dx = 2x#
#v = x ^ 2-2x#
#dv / dx = 2x = 2#
#d / dx(x ^ 2 + 1)(x ^ 2-2x)=(du)/ dxv + u(du)/ dx#
=#2x(x ^ 2-2x)+(x ^ 2 + 1)(2x-2)#
=#2x ^ 3-4x ^ 2 + 2x ^ 3-2x ^ 2 + 2x-2#
=#4x ^ 3-6x ^ 2 + 2x-2#