HI, I’m currently working on Week2 Assignment. Need your help to move forward.

My cost function is:

A = sigmoid(np.dot(w.T,X)+b)

cost = np.dot(-1/m,((np.dot(Y,np.log(A)))+np.dot((1-Y),np.log(1-A))))

dw = 1/m * np.dot(X,(A-Y).T)

db = 1/m * (A-Y)

I get an error as below:

ValueError Traceback (most recent call last)

in

3 X = np.array([[1., -2., -1.], [3., 0.5, -3.2]])

4 Y = np.array([[1, 1, 0]])

----> 5 grads, cost = propagate(w, b, X, Y)

6

7 assert type(grads[“dw”]) == np.ndarray

in propagate(w, b, X, Y)

32

33 A = sigmoid(np.dot(w.T,X)+b)

—> 34 cost = np.dot(-1/m,((np.dot(Y,np.log(A)))+np.dot((1-Y),np.log(1-A))))

35

36 # YOUR CODE ENDS HERE

<**array_function** internals> in dot(*args, **kwargs)

ValueError: shapes (1,3) and (1,3) not aligned: 3 (dim 1) != 1 (dim 0)