求导f(x) = 4x^3 + sin(x^2)

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求导f(x)=4x^3+sin(x^2)求导f(x)=4x^3+sin(x^2)求导f(x)=4x^3+sin(x^2)12x^2+2xcos(x^2)f''(x)=12x²+2xcosx&su

求导f(x) = 4x^3 + sin(x^2)
求导f(x) = 4x^3 + sin(x^2)

求导f(x) = 4x^3 + sin(x^2)
12x^2+2xcos(x^2)

f'(x)=12x²+2xcosx²

f'(x)=4*3x^2+cos(x^2)*2x=12x^2+2x*cos(x^2)

f'(x)=4*3x^2+cos(x^2)*2x=12x^2+2x*cos(x^2)

是不是x的3次方和x的平方,如果是的话,答案是12x²+2xcosx²