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公式推导,特别是后半部分的推导 #9

@zhengguoxian123

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@zhengguoxian123

matrix<3> dxdA0 = (b(2 * i + 0) + A.row(2 * i + 0) * x) * ATAinv + (x * A.row(2 * i + 0) * ATAinv).transpose(); matrix<3> dxdA1 = (b(2 * i + 1) + A.row(2 * i + 1) * x) * ATAinv + (x * A.row(2 * i + 1) * ATAinv).transpose();
想问下作者,这个公式是怎么推出来的?帮忙指导下,谢谢啦

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