I need help deriving this equation I'm not sure where to start

For the network shown below which has activation functions hi(), h2() and h3(). 705 W1 h1 h3 y W2 W6 W3 h2 W4By application of the chain rule, Show that the derivative of the cost given by g(y, Q) with respect to the weight mg is given by 59%?) = 59(ya)3h3(23)w 3h2(22} 311:2 6&3 am '3 622 :13], (I) where 21 = 1011131 + 1033521 22 = 102321 + 1041321 (2) Z3 = w5h1(21) -l w5h2(22)