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)