发布网友 发布时间:2024-10-05 19:05
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热心网友 时间:2024-10-05 23:20
dy=ln(x^2)·d(x^2)+x^2·dln(x^2)-sinxdx
=2x·ln(x^2)dx+x^2·1/x^2·d(x^2)-sinxdx
=2x·ln(x^2)dx+2xdx-sinxdx
=[2x·ln(x^2)+2x-sinx]dx