C2 Week-2 Assignment:

i have problem the exercises passed ,but final score is zero.

the feedback is :
There was a problem compiling the code from your notebook. Details:
operands could not be broadcast together with shapes (2,) (200,)

help me please ,


Most likely this means you’re using an element-wise matrix operation (like a scalar multiply), when you need a matrix operation (like a dot or matrix product). You might also need a transposition.