formulor learning problem

为什么dz[1] = W[2]T dz[2] * g[1]’ *(z[1]),怎么推导出来的?

Whats this ?

hello Spah,

thank you so much reply me. this is the backward propagation in basic deep network formula derivation for dZ. I have fix it by myself, But still thanks so much for your relpy.

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