求二阶导数的过程!
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求二阶导数的过程!
y'=-3x^2/(x^3+1)^2
y''=-6x/(x^3+1)^2+6x^2*(3x^2)/(x^3+1)^3
=-6x/(x^3+1)^2+18x^4/(x^3+1)^3
求二阶导数的过程!
y'=-3x^2/(x^3+1)^2
y''=-6x/(x^3+1)^2+6x^2*(3x^2)/(x^3+1)^3
=-6x/(x^3+1)^2+18x^4/(x^3+1)^3