Question $2.(4$ marks$)$

For the simple recurrent neural network with structure as shown in the diagram below, give the formulas

for computing the following: $($Make sure to define all the notation you use in the answers.$)$

$($a$)(2$ marks$)$ the activation values $h(t)$ at the hidden layer,

$($b$)(2$ marks$)$ the output values $y(t).$