求导:y=e^-2(x^2-x+1)

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求导:y=e^-2(x^2-x+1)求导:y=e^-2(x^2-x+1)求导:y=e^-2(x^2-x+1)y''=(2-4x)e^(-2(x^2-x+1))要逐级求导,令u=-2(x^2-x+1)=-

求导:y=e^-2(x^2-x+1)
求导:y=e^-2(x^2-x+1)

求导:y=e^-2(x^2-x+1)
y'=(2-4x)e^(-2(x^2-x+1))
要逐级求导,
令u=-2(x^2-x+1)=-2x^2+2x-2
u'=-4x+2
又y=e^u
y'=u'e^u=(2-4x)e^(-2(x^2-x+1))