I have corrected two errors in the backward_propagation_n code, but it still failed

Hi,
I have corrected two errors in the backward_propagation_n code. But when I reran the code, it still not worked.

The code output was :
There is a mistake in the backward propagation! difference = 1.1885552035482147e-07

Please help me. I would be grateful.
Jimmy

Here is the correct answer if you remove the intentional errors in the back prop code:

Your backward propagation works perfectly fine! difference = 1.1890913024229996e-07

Interesting. That’s different from your answer in the 3rd decimal place, which is not a rounding error. So something must be wrong in your code, but it’s a subtle mistake.

It will help to see your code, but we can’t do that in a public thread. Please check your DMs for a message from me about how to share the code privately.