%  MATH1251 - Example of polynomial interpolation. Direct method.
a=[1;2;3;4]
A=[a.^0 a.^1 a.^2 a.^3]
v=[9.7;9.2;7.9;4.9]
c=A\v
r=@(s) [1 s s^2 s^3]*c
r(1.5)
r(4.5)