Find the Maclaurin series of the function $f(x) =3 x^3-7 x^2-4 x+7$
$(f(x) = \displaystyle \sum_{n=0}^\infty c_n x^n )$
$c_0 =$
$c_1 =$
$c_2 =$
$c_3 =$
$c_4 =$
Find the radius of convergence $R =$ Enter INF if the radius of covergence is infinity .