A two input, single$-$output, two layer feed forward neural network has the hidden weights Wh $=[0\mathrm{.}30\mathrm{.}4$; $0\mathrm{.}20\mathrm{.}8$; $0\mathrm{.}10\mathrm{.}6]$ and output layer weights wo $=[0\mathrm{.}220\mathrm{.}470\mathrm{.}36].$ The bias values are b $=0\mathrm{.}5$ and b$=0\mathrm{.}45$ and the input is I$=[0\mathrm{.}50\mathrm{.}2].$ Assume the activation function used is tanh activation function the activation function