Problem $3$: Gradient Descent. Please use gradient descent to learn the parameters for the following model:

$)=([x_1,x_2,x_3,x_4]$

and cost function: $J=\frac{1}{2N}{\displaystyle \underset{i=1}{\overset{N}{}}}(f(x_i)-y_i{)}^2.$

Please provide the whole process including the inferred gradient and the parameter updates.