3. Calculate the gradient update equations if the network has two 2x2 convolutional filters as shown below. The output of each filter is averaged and given to a linear classifier w=(w1,w2). As we did the optimization for (2) above, can you derive the updates for the network in this problem? P1 P2 P3 z1 z 2 |Z3 Z4 P4 P5 p6 p7 p8 z5 26 p9 3x3 input images 27 28 2x2 convolutional layer (2 filters) Global average pooling Linear classifier