Why there’s an erorr in the costs values?
{moderator edit - solution code removed}
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In your model(), you have several hard-coded variables. See parameters for optimize(). All parameters like num_iterations, learning_rate, print_cost ,… are passed from a caller. You should not override any. I think you misunderstood the meaning of “default arguments” that you see at model(). Those are only used if “default arguments” are not set by a caller. You do not need to take care.
Hope this helps.
Thank you
I’m very sorry