new

linear_regression

considerando X com as dimensoes(m,n) e theta com as dimensoes (n,1)
#Default is normal equation
#Option
#gradient => not use normal equation
#plot => plot data and linear
#cost => plot cost
#alpha
#n => number of iterations

normal_eq

linear_regression_pred

devolve o valor previsto
considerando X com as dimensoes(m,n) e theta com as dimensoes (n,1)