求导:y=x^2×ln(3-x) ,
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求导:y=x^2×ln(3-x) ,
求导:y=x^2×ln(3-x) ,
求导:y=x^2×ln(3-x) ,
答:
y=(x^2)ln(3-x)
y'(x)=(x^2)'ln(3-x)+(x^2)[ln(3-x)]'
=2xln(3-x)+(x^2)(-1)/(3-x)
=2xln(3-x)+(x^2)/(x-3)